# Google Classroom API . courses . announcements

## Instance Methods

Creates an announcement.

Deletes an announcement.

Returns an announcement.

Returns a list of announcements that the requester is permitted to view.

Retrieves the next page of results.

Modifies assignee mode and options of an announcement.

Updates one or more fields of an announcement.

### Method Details

`create(courseId, body, x__xgafv=None)`

    Creates an announcement.

    This method returns the following error codes:

    * `PERMISSION_DENIED` if the requesting user is not permitted to access the
    requested course, create announcements in the requested course, share a
    Drive attachment, or for access errors.
    * `INVALID_ARGUMENT` if the request is malformed.
    * `NOT_FOUND` if the requested course does not exist.
    * `FAILED_PRECONDITION` for the following request error:
        * AttachmentNotVisible

    Args:
      courseId: string, Identifier of the course.
    This identifier can be either the Classroom-assigned identifier or an
    alias. (required)
      body: object, The request body. (required)
        The object takes the form of:

    { # Announcement created by a teacher for students of the course
      "updateTime": "A String", # Timestamp of the most recent change to this announcement.
          #
          # Read-only.
      "scheduledTime": "A String", # Optional timestamp when this announcement is scheduled to be published.
      "creatorUserId": "A String", # Identifier for the user that created the announcement.
          #
          # Read-only.
      "courseId": "A String", # Identifier of the course.
          #
          # Read-only.
      "text": "A String", # Description of this announcement.
          # The text must be a valid UTF-8 string containing no more
          # than 30,000 characters.
      "alternateLink": "A String", # Absolute link to this announcement in the Classroom web UI.
          # This is only populated if `state` is `PUBLISHED`.
          #
          # Read-only.
      "creationTime": "A String", # Timestamp when this announcement was created.
          #
          # Read-only.
      "assigneeMode": "A String", # Assignee mode of the announcement.
          # If unspecified, the default value is `ALL_STUDENTS`.
      "state": "A String", # Status of this announcement.
          # If unspecified, the default state is `DRAFT`.
      "materials": [ # Additional materials.
          #
          # Announcements must have no more than 20 material items.
        { # Material attached to course work.
            #
            # When creating attachments, setting the `form` field is not supported.
          "youtubeVideo": { # YouTube video item. # YouTube video material.
            "alternateLink": "A String", # URL that can be used to view the YouTube video.
                #
                # Read-only.
            "thumbnailUrl": "A String", # URL of a thumbnail image of the YouTube video.
                #
                # Read-only.
            "id": "A String", # YouTube API resource ID.
            "title": "A String", # Title of the YouTube video.
                #
                # Read-only.
          },
          "driveFile": { # Drive file that is used as material for course work. # Google Drive file material.
            "driveFile": { # Representation of a Google Drive file. # Drive file details.
              "thumbnailUrl": "A String", # URL of a thumbnail image of the Drive item.
                  #
                  # Read-only.
              "alternateLink": "A String", # URL that can be used to access the Drive item.
                  #
                  # Read-only.
              "id": "A String", # Drive API resource ID.
              "title": "A String", # Title of the Drive item.
                  #
                  # Read-only.
            },
            "shareMode": "A String", # Mechanism by which students access the Drive item.
          },
          "link": { # URL item. # Link material. On creation, will be upgraded to a more appropriate type
              # if possible, and this will be reflected in the response.
            "url": "A String", # URL to link to.
                # This must be a valid UTF-8 string containing between 1 and 2024 characters.
            "thumbnailUrl": "A String", # URL of a thumbnail image of the target URL.
                #
                # Read-only.
            "title": "A String", # Title of the target of the URL.
                #
                # Read-only.
          },
          "form": { # Google Forms item. # Google Forms material.
            "formUrl": "A String", # URL of the form.
            "thumbnailUrl": "A String", # URL of a thumbnail image of the Form.
                #
                # Read-only.
            "responseUrl": "A String", # URL of the form responses document.
                # Only set if respsonses have been recorded and only when the
                # requesting user is an editor of the form.
                #
                # Read-only.
            "title": "A String", # Title of the Form.
                #
                # Read-only.
          },
        },
      ],
      "individualStudentsOptions": { # Assignee details about a coursework/announcement. # Identifiers of students with access to the announcement.
          # This field is set only if `assigneeMode` is `INDIVIDUAL_STUDENTS`.
          # If the `assigneeMode` is `INDIVIDUAL_STUDENTS`, then only students
          # specified in this field will be able to see the announcement.
          # This field is set if and only if `assigneeMode` is `INDIVIDUAL_STUDENTS`.
        "studentIds": [ # Identifiers for the students that have access to the
            # coursework/announcement.
          "A String",
        ],
      },
      "id": "A String", # Classroom-assigned identifier of this announcement, unique per course.
          #
          # Read-only.
    }

      x__xgafv: string, V1 error format.
        Allowed values
          1 - v1 error format
          2 - v2 error format

    Returns:
      An object of the form:

        { # Announcement created by a teacher for students of the course
        "updateTime": "A String", # Timestamp of the most recent change to this announcement.
            #
            # Read-only.
        "scheduledTime": "A String", # Optional timestamp when this announcement is scheduled to be published.
        "creatorUserId": "A String", # Identifier for the user that created the announcement.
            #
            # Read-only.
        "courseId": "A String", # Identifier of the course.
            #
            # Read-only.
        "text": "A String", # Description of this announcement.
            # The text must be a valid UTF-8 string containing no more
            # than 30,000 characters.
        "alternateLink": "A String", # Absolute link to this announcement in the Classroom web UI.
            # This is only populated if `state` is `PUBLISHED`.
            #
            # Read-only.
        "creationTime": "A String", # Timestamp when this announcement was created.
            #
            # Read-only.
        "assigneeMode": "A String", # Assignee mode of the announcement.
            # If unspecified, the default value is `ALL_STUDENTS`.
        "state": "A String", # Status of this announcement.
            # If unspecified, the default state is `DRAFT`.
        "materials": [ # Additional materials.
            #
            # Announcements must have no more than 20 material items.
          { # Material attached to course work.
              #
              # When creating attachments, setting the `form` field is not supported.
            "youtubeVideo": { # YouTube video item. # YouTube video material.
              "alternateLink": "A String", # URL that can be used to view the YouTube video.
                  #
                  # Read-only.
              "thumbnailUrl": "A String", # URL of a thumbnail image of the YouTube video.
                  #
                  # Read-only.
              "id": "A String", # YouTube API resource ID.
              "title": "A String", # Title of the YouTube video.
                  #
                  # Read-only.
            },
            "driveFile": { # Drive file that is used as material for course work. # Google Drive file material.
              "driveFile": { # Representation of a Google Drive file. # Drive file details.
                "thumbnailUrl": "A String", # URL of a thumbnail image of the Drive item.
                    #
                    # Read-only.
                "alternateLink": "A String", # URL that can be used to access the Drive item.
                    #
                    # Read-only.
                "id": "A String", # Drive API resource ID.
                "title": "A String", # Title of the Drive item.
                    #
                    # Read-only.
              },
              "shareMode": "A String", # Mechanism by which students access the Drive item.
            },
            "link": { # URL item. # Link material. On creation, will be upgraded to a more appropriate type
                # if possible, and this will be reflected in the response.
              "url": "A String", # URL to link to.
                  # This must be a valid UTF-8 string containing between 1 and 2024 characters.
              "thumbnailUrl": "A String", # URL of a thumbnail image of the target URL.
                  #
                  # Read-only.
              "title": "A String", # Title of the target of the URL.
                  #
                  # Read-only.
            },
            "form": { # Google Forms item. # Google Forms material.
              "formUrl": "A String", # URL of the form.
              "thumbnailUrl": "A String", # URL of a thumbnail image of the Form.
                  #
                  # Read-only.
              "responseUrl": "A String", # URL of the form responses document.
                  # Only set if respsonses have been recorded and only when the
                  # requesting user is an editor of the form.
                  #
                  # Read-only.
              "title": "A String", # Title of the Form.
                  #
                  # Read-only.
            },
          },
        ],
        "individualStudentsOptions": { # Assignee details about a coursework/announcement. # Identifiers of students with access to the announcement.
            # This field is set only if `assigneeMode` is `INDIVIDUAL_STUDENTS`.
            # If the `assigneeMode` is `INDIVIDUAL_STUDENTS`, then only students
            # specified in this field will be able to see the announcement.
            # This field is set if and only if `assigneeMode` is `INDIVIDUAL_STUDENTS`.
          "studentIds": [ # Identifiers for the students that have access to the
              # coursework/announcement.
            "A String",
          ],
        },
        "id": "A String", # Classroom-assigned identifier of this announcement, unique per course.
            #
            # Read-only.
      }

`delete(courseId, id, x__xgafv=None)`

    Deletes an announcement.

    This request must be made by the Developer Console project of the
    [OAuth client ID](https://support.google.com/cloud/answer/6158849) used to
    create the corresponding announcement item.

    This method returns the following error codes:

    * `PERMISSION_DENIED` if the requesting developer project did not create
    the corresponding announcement, if the requesting user is not permitted
    to delete the requested course or for access errors.
    * `FAILED_PRECONDITION` if the requested announcement has already been
    deleted.
    * `NOT_FOUND` if no course exists with the requested ID.

    Args:
      courseId: string, Identifier of the course.
    This identifier can be either the Classroom-assigned identifier or an
    alias. (required)
      id: string, Identifier of the announcement to delete.
    This identifier is a Classroom-assigned identifier. (required)
      x__xgafv: string, V1 error format.
        Allowed values
          1 - v1 error format
          2 - v2 error format

    Returns:
      An object of the form:

        { # A generic empty message that you can re-use to avoid defining duplicated
          # empty messages in your APIs. A typical example is to use it as the request
          # or the response type of an API method. For instance:
          #
          #     service Foo {
          #       rpc Bar(google.protobuf.Empty) returns (google.protobuf.Empty);
          #     }
          #
          # The JSON representation for `Empty` is empty JSON object `{}`.
      }

`get(courseId, id, x__xgafv=None)`

    Returns an announcement.

    This method returns the following error codes:

    * `PERMISSION_DENIED` if the requesting user is not permitted to access the
    requested course or announcement, or for access errors.
    * `INVALID_ARGUMENT` if the request is malformed.
    * `NOT_FOUND` if the requested course or announcement does not exist.

    Args:
      courseId: string, Identifier of the course.
    This identifier can be either the Classroom-assigned identifier or an
    alias. (required)
      id: string, Identifier of the announcement. (required)
      x__xgafv: string, V1 error format.
        Allowed values
          1 - v1 error format
          2 - v2 error format

    Returns:
      An object of the form:

        { # Announcement created by a teacher for students of the course
        "updateTime": "A String", # Timestamp of the most recent change to this announcement.
            #
            # Read-only.
        "scheduledTime": "A String", # Optional timestamp when this announcement is scheduled to be published.
        "creatorUserId": "A String", # Identifier for the user that created the announcement.
            #
            # Read-only.
        "courseId": "A String", # Identifier of the course.
            #
            # Read-only.
        "text": "A String", # Description of this announcement.
            # The text must be a valid UTF-8 string containing no more
            # than 30,000 characters.
        "alternateLink": "A String", # Absolute link to this announcement in the Classroom web UI.
            # This is only populated if `state` is `PUBLISHED`.
            #
            # Read-only.
        "creationTime": "A String", # Timestamp when this announcement was created.
            #
            # Read-only.
        "assigneeMode": "A String", # Assignee mode of the announcement.
            # If unspecified, the default value is `ALL_STUDENTS`.
        "state": "A String", # Status of this announcement.
            # If unspecified, the default state is `DRAFT`.
        "materials": [ # Additional materials.
            #
            # Announcements must have no more than 20 material items.
          { # Material attached to course work.
              #
              # When creating attachments, setting the `form` field is not supported.
            "youtubeVideo": { # YouTube video item. # YouTube video material.
              "alternateLink": "A String", # URL that can be used to view the YouTube video.
                  #
                  # Read-only.
              "thumbnailUrl": "A String", # URL of a thumbnail image of the YouTube video.
                  #
                  # Read-only.
              "id": "A String", # YouTube API resource ID.
              "title": "A String", # Title of the YouTube video.
                  #
                  # Read-only.
            },
            "driveFile": { # Drive file that is used as material for course work. # Google Drive file material.
              "driveFile": { # Representation of a Google Drive file. # Drive file details.
                "thumbnailUrl": "A String", # URL of a thumbnail image of the Drive item.
                    #
                    # Read-only.
                "alternateLink": "A String", # URL that can be used to access the Drive item.
                    #
                    # Read-only.
                "id": "A String", # Drive API resource ID.
                "title": "A String", # Title of the Drive item.
                    #
                    # Read-only.
              },
              "shareMode": "A String", # Mechanism by which students access the Drive item.
            },
            "link": { # URL item. # Link material. On creation, will be upgraded to a more appropriate type
                # if possible, and this will be reflected in the response.
              "url": "A String", # URL to link to.
                  # This must be a valid UTF-8 string containing between 1 and 2024 characters.
              "thumbnailUrl": "A String", # URL of a thumbnail image of the target URL.
                  #
                  # Read-only.
              "title": "A String", # Title of the target of the URL.
                  #
                  # Read-only.
            },
            "form": { # Google Forms item. # Google Forms material.
              "formUrl": "A String", # URL of the form.
              "thumbnailUrl": "A String", # URL of a thumbnail image of the Form.
                  #
                  # Read-only.
              "responseUrl": "A String", # URL of the form responses document.
                  # Only set if respsonses have been recorded and only when the
                  # requesting user is an editor of the form.
                  #
                  # Read-only.
              "title": "A String", # Title of the Form.
                  #
                  # Read-only.
            },
          },
        ],
        "individualStudentsOptions": { # Assignee details about a coursework/announcement. # Identifiers of students with access to the announcement.
            # This field is set only if `assigneeMode` is `INDIVIDUAL_STUDENTS`.
            # If the `assigneeMode` is `INDIVIDUAL_STUDENTS`, then only students
            # specified in this field will be able to see the announcement.
            # This field is set if and only if `assigneeMode` is `INDIVIDUAL_STUDENTS`.
          "studentIds": [ # Identifiers for the students that have access to the
              # coursework/announcement.
            "A String",
          ],
        },
        "id": "A String", # Classroom-assigned identifier of this announcement, unique per course.
            #
            # Read-only.
      }

`list(courseId, orderBy=None, pageSize=None, announcementStates=None, pageToken=None, x__xgafv=None)`

    Returns a list of announcements that the requester is permitted to view.

    Course students may only view `PUBLISHED` announcements. Course teachers
    and domain administrators may view all announcements.

    This method returns the following error codes:

    * `PERMISSION_DENIED` if the requesting user is not permitted to access
    the requested course or for access errors.
    * `INVALID_ARGUMENT` if the request is malformed.
    * `NOT_FOUND` if the requested course does not exist.

    Args:
      courseId: string, Identifier of the course.
    This identifier can be either the Classroom-assigned identifier or an
    alias. (required)
      orderBy: string, Optional sort ordering for results. A comma-separated list of fields with
    an optional sort direction keyword. Supported field is `updateTime`.
    Supported direction keywords are `asc` and `desc`.
    If not specified, `updateTime desc` is the default behavior.
    Examples: `updateTime asc`, `updateTime`
      pageSize: integer, Maximum number of items to return. Zero or unspecified indicates that the
    server may assign a maximum.

    The server may return fewer than the specified number of results.
      announcementStates: string, Restriction on the `state` of announcements returned.
    If this argument is left unspecified, the default value is `PUBLISHED`. (repeated)
      pageToken: string, nextPageToken
    value returned from a previous
    list call,
    indicating that the subsequent page of results should be returned.

    The list request
    must be otherwise identical to the one that resulted in this token.
      x__xgafv: string, V1 error format.
        Allowed values
          1 - v1 error format
          2 - v2 error format

    Returns:
      An object of the form:

        { # Response when listing course work.
        "nextPageToken": "A String", # Token identifying the next page of results to return. If empty, no further
            # results are available.
        "announcements": [ # Announcement items that match the request.
          { # Announcement created by a teacher for students of the course
            "updateTime": "A String", # Timestamp of the most recent change to this announcement.
                #
                # Read-only.
            "scheduledTime": "A String", # Optional timestamp when this announcement is scheduled to be published.
            "creatorUserId": "A String", # Identifier for the user that created the announcement.
                #
                # Read-only.
            "courseId": "A String", # Identifier of the course.
                #
                # Read-only.
            "text": "A String", # Description of this announcement.
                # The text must be a valid UTF-8 string containing no more
                # than 30,000 characters.
            "alternateLink": "A String", # Absolute link to this announcement in the Classroom web UI.
                # This is only populated if `state` is `PUBLISHED`.
                #
                # Read-only.
            "creationTime": "A String", # Timestamp when this announcement was created.
                #
                # Read-only.
            "assigneeMode": "A String", # Assignee mode of the announcement.
                # If unspecified, the default value is `ALL_STUDENTS`.
            "state": "A String", # Status of this announcement.
                # If unspecified, the default state is `DRAFT`.
            "materials": [ # Additional materials.
                #
                # Announcements must have no more than 20 material items.
              { # Material attached to course work.
                  #
                  # When creating attachments, setting the `form` field is not supported.
                "youtubeVideo": { # YouTube video item. # YouTube video material.
                  "alternateLink": "A String", # URL that can be used to view the YouTube video.
                      #
                      # Read-only.
                  "thumbnailUrl": "A String", # URL of a thumbnail image of the YouTube video.
                      #
                      # Read-only.
                  "id": "A String", # YouTube API resource ID.
                  "title": "A String", # Title of the YouTube video.
                      #
                      # Read-only.
                },
                "driveFile": { # Drive file that is used as material for course work. # Google Drive file material.
                  "driveFile": { # Representation of a Google Drive file. # Drive file details.
                    "thumbnailUrl": "A String", # URL of a thumbnail image of the Drive item.
                        #
                        # Read-only.
                    "alternateLink": "A String", # URL that can be used to access the Drive item.
                        #
                        # Read-only.
                    "id": "A String", # Drive API resource ID.
                    "title": "A String", # Title of the Drive item.
                        #
                        # Read-only.
                  },
                  "shareMode": "A String", # Mechanism by which students access the Drive item.
                },
                "link": { # URL item. # Link material. On creation, will be upgraded to a more appropriate type
                    # if possible, and this will be reflected in the response.
                  "url": "A String", # URL to link to.
                      # This must be a valid UTF-8 string containing between 1 and 2024 characters.
                  "thumbnailUrl": "A String", # URL of a thumbnail image of the target URL.
                      #
                      # Read-only.
                  "title": "A String", # Title of the target of the URL.
                      #
                      # Read-only.
                },
                "form": { # Google Forms item. # Google Forms material.
                  "formUrl": "A String", # URL of the form.
                  "thumbnailUrl": "A String", # URL of a thumbnail image of the Form.
                      #
                      # Read-only.
                  "responseUrl": "A String", # URL of the form responses document.
                      # Only set if respsonses have been recorded and only when the
                      # requesting user is an editor of the form.
                      #
                      # Read-only.
                  "title": "A String", # Title of the Form.
                      #
                      # Read-only.
                },
              },
            ],
            "individualStudentsOptions": { # Assignee details about a coursework/announcement. # Identifiers of students with access to the announcement.
                # This field is set only if `assigneeMode` is `INDIVIDUAL_STUDENTS`.
                # If the `assigneeMode` is `INDIVIDUAL_STUDENTS`, then only students
                # specified in this field will be able to see the announcement.
                # This field is set if and only if `assigneeMode` is `INDIVIDUAL_STUDENTS`.
              "studentIds": [ # Identifiers for the students that have access to the
                  # coursework/announcement.
                "A String",
              ],
            },
            "id": "A String", # Classroom-assigned identifier of this announcement, unique per course.
                #
                # Read-only.
          },
        ],
      }

`list_next(previous_request, previous_response)`

    Retrieves the next page of results.

    Args:
      previous_request: The request for the previous page. (required)
      previous_response: The response from the request for the previous page. (required)

    Returns:
      A request object that you can call 'execute()' on to request the next
      page. Returns None if there are no more items in the collection.

`modifyAssignees(courseId, id, body, x__xgafv=None)`

    Modifies assignee mode and options of an announcement.

    Only a teacher of the course that contains the announcement may
    call this method.

    This method returns the following error codes:

    * `PERMISSION_DENIED` if the requesting user is not permitted to access the
    requested course or course work or for access errors.
    * `INVALID_ARGUMENT` if the request is malformed.
    * `NOT_FOUND` if the requested course or course work does not exist.

    Args:
      courseId: string, Identifier of the course.
    This identifier can be either the Classroom-assigned identifier or an
    alias. (required)
      id: string, Identifier of the announcement. (required)
      body: object, The request body. (required)
        The object takes the form of:

    { # Request to modify assignee mode and options of an announcement.
        "assigneeMode": "A String", # Mode of the announcement describing whether it will be accessible by all
            # students or specified individual students.
        "modifyIndividualStudentsOptions": { # Contains fields to add or remove students from a course work or announcement # Set which students can view or cannot view the announcement.
            # Must be specified only when `assigneeMode` is `INDIVIDUAL_STUDENTS`.
            # where the `assigneeMode` is set to `INDIVIDUAL_STUDENTS`.
          "addStudentIds": [ # Ids of students to be added as having access to this
              # coursework/announcement.
            "A String",
          ],
          "removeStudentIds": [ # Ids of students to be removed from having access to this
              # coursework/announcement.
            "A String",
          ],
        },
      }

      x__xgafv: string, V1 error format.
        Allowed values
          1 - v1 error format
          2 - v2 error format

    Returns:
      An object of the form:

        { # Announcement created by a teacher for students of the course
        "updateTime": "A String", # Timestamp of the most recent change to this announcement.
            #
            # Read-only.
        "scheduledTime": "A String", # Optional timestamp when this announcement is scheduled to be published.
        "creatorUserId": "A String", # Identifier for the user that created the announcement.
            #
            # Read-only.
        "courseId": "A String", # Identifier of the course.
            #
            # Read-only.
        "text": "A String", # Description of this announcement.
            # The text must be a valid UTF-8 string containing no more
            # than 30,000 characters.
        "alternateLink": "A String", # Absolute link to this announcement in the Classroom web UI.
            # This is only populated if `state` is `PUBLISHED`.
            #
            # Read-only.
        "creationTime": "A String", # Timestamp when this announcement was created.
            #
            # Read-only.
        "assigneeMode": "A String", # Assignee mode of the announcement.
            # If unspecified, the default value is `ALL_STUDENTS`.
        "state": "A String", # Status of this announcement.
            # If unspecified, the default state is `DRAFT`.
        "materials": [ # Additional materials.
            #
            # Announcements must have no more than 20 material items.
          { # Material attached to course work.
              #
              # When creating attachments, setting the `form` field is not supported.
            "youtubeVideo": { # YouTube video item. # YouTube video material.
              "alternateLink": "A String", # URL that can be used to view the YouTube video.
                  #
                  # Read-only.
              "thumbnailUrl": "A String", # URL of a thumbnail image of the YouTube video.
                  #
                  # Read-only.
              "id": "A String", # YouTube API resource ID.
              "title": "A String", # Title of the YouTube video.
                  #
                  # Read-only.
            },
            "driveFile": { # Drive file that is used as material for course work. # Google Drive file material.
              "driveFile": { # Representation of a Google Drive file. # Drive file details.
                "thumbnailUrl": "A String", # URL of a thumbnail image of the Drive item.
                    #
                    # Read-only.
                "alternateLink": "A String", # URL that can be used to access the Drive item.
                    #
                    # Read-only.
                "id": "A String", # Drive API resource ID.
                "title": "A String", # Title of the Drive item.
                    #
                    # Read-only.
              },
              "shareMode": "A String", # Mechanism by which students access the Drive item.
            },
            "link": { # URL item. # Link material. On creation, will be upgraded to a more appropriate type
                # if possible, and this will be reflected in the response.
              "url": "A String", # URL to link to.
                  # This must be a valid UTF-8 string containing between 1 and 2024 characters.
              "thumbnailUrl": "A String", # URL of a thumbnail image of the target URL.
                  #
                  # Read-only.
              "title": "A String", # Title of the target of the URL.
                  #
                  # Read-only.
            },
            "form": { # Google Forms item. # Google Forms material.
              "formUrl": "A String", # URL of the form.
              "thumbnailUrl": "A String", # URL of a thumbnail image of the Form.
                  #
                  # Read-only.
              "responseUrl": "A String", # URL of the form responses document.
                  # Only set if respsonses have been recorded and only when the
                  # requesting user is an editor of the form.
                  #
                  # Read-only.
              "title": "A String", # Title of the Form.
                  #
                  # Read-only.
            },
          },
        ],
        "individualStudentsOptions": { # Assignee details about a coursework/announcement. # Identifiers of students with access to the announcement.
            # This field is set only if `assigneeMode` is `INDIVIDUAL_STUDENTS`.
            # If the `assigneeMode` is `INDIVIDUAL_STUDENTS`, then only students
            # specified in this field will be able to see the announcement.
            # This field is set if and only if `assigneeMode` is `INDIVIDUAL_STUDENTS`.
          "studentIds": [ # Identifiers for the students that have access to the
              # coursework/announcement.
            "A String",
          ],
        },
        "id": "A String", # Classroom-assigned identifier of this announcement, unique per course.
            #
            # Read-only.
      }

`patch(courseId, id, body, updateMask=None, x__xgafv=None)`

    Updates one or more fields of an announcement.

    This method returns the following error codes:

    * `PERMISSION_DENIED` if the requesting developer project did not create
    the corresponding announcement or for access errors.
    * `INVALID_ARGUMENT` if the request is malformed.
    * `FAILED_PRECONDITION` if the requested announcement has already been
    deleted.
    * `NOT_FOUND` if the requested course or announcement does not exist

    Args:
      courseId: string, Identifier of the course.
    This identifier can be either the Classroom-assigned identifier or an
    alias. (required)
      id: string, Identifier of the announcement. (required)
      body: object, The request body. (required)
        The object takes the form of:

    { # Announcement created by a teacher for students of the course
      "updateTime": "A String", # Timestamp of the most recent change to this announcement.
          #
          # Read-only.
      "scheduledTime": "A String", # Optional timestamp when this announcement is scheduled to be published.
      "creatorUserId": "A String", # Identifier for the user that created the announcement.
          #
          # Read-only.
      "courseId": "A String", # Identifier of the course.
          #
          # Read-only.
      "text": "A String", # Description of this announcement.
          # The text must be a valid UTF-8 string containing no more
          # than 30,000 characters.
      "alternateLink": "A String", # Absolute link to this announcement in the Classroom web UI.
          # This is only populated if `state` is `PUBLISHED`.
          #
          # Read-only.
      "creationTime": "A String", # Timestamp when this announcement was created.
          #
          # Read-only.
      "assigneeMode": "A String", # Assignee mode of the announcement.
          # If unspecified, the default value is `ALL_STUDENTS`.
      "state": "A String", # Status of this announcement.
          # If unspecified, the default state is `DRAFT`.
      "materials": [ # Additional materials.
          #
          # Announcements must have no more than 20 material items.
        { # Material attached to course work.
            #
            # When creating attachments, setting the `form` field is not supported.
          "youtubeVideo": { # YouTube video item. # YouTube video material.
            "alternateLink": "A String", # URL that can be used to view the YouTube video.
                #
                # Read-only.
            "thumbnailUrl": "A String", # URL of a thumbnail image of the YouTube video.
                #
                # Read-only.
            "id": "A String", # YouTube API resource ID.
            "title": "A String", # Title of the YouTube video.
                #
                # Read-only.
          },
          "driveFile": { # Drive file that is used as material for course work. # Google Drive file material.
            "driveFile": { # Representation of a Google Drive file. # Drive file details.
              "thumbnailUrl": "A String", # URL of a thumbnail image of the Drive item.
                  #
                  # Read-only.
              "alternateLink": "A String", # URL that can be used to access the Drive item.
                  #
                  # Read-only.
              "id": "A String", # Drive API resource ID.
              "title": "A String", # Title of the Drive item.
                  #
                  # Read-only.
            },
            "shareMode": "A String", # Mechanism by which students access the Drive item.
          },
          "link": { # URL item. # Link material. On creation, will be upgraded to a more appropriate type
              # if possible, and this will be reflected in the response.
            "url": "A String", # URL to link to.
                # This must be a valid UTF-8 string containing between 1 and 2024 characters.
            "thumbnailUrl": "A String", # URL of a thumbnail image of the target URL.
                #
                # Read-only.
            "title": "A String", # Title of the target of the URL.
                #
                # Read-only.
          },
          "form": { # Google Forms item. # Google Forms material.
            "formUrl": "A String", # URL of the form.
            "thumbnailUrl": "A String", # URL of a thumbnail image of the Form.
                #
                # Read-only.
            "responseUrl": "A String", # URL of the form responses document.
                # Only set if respsonses have been recorded and only when the
                # requesting user is an editor of the form.
                #
                # Read-only.
            "title": "A String", # Title of the Form.
                #
                # Read-only.
          },
        },
      ],
      "individualStudentsOptions": { # Assignee details about a coursework/announcement. # Identifiers of students with access to the announcement.
          # This field is set only if `assigneeMode` is `INDIVIDUAL_STUDENTS`.
          # If the `assigneeMode` is `INDIVIDUAL_STUDENTS`, then only students
          # specified in this field will be able to see the announcement.
          # This field is set if and only if `assigneeMode` is `INDIVIDUAL_STUDENTS`.
        "studentIds": [ # Identifiers for the students that have access to the
            # coursework/announcement.
          "A String",
        ],
      },
      "id": "A String", # Classroom-assigned identifier of this announcement, unique per course.
          #
          # Read-only.
    }

      updateMask: string, Mask that identifies which fields on the announcement to update.
    This field is required to do an update. The update fails if invalid
    fields are specified. If a field supports empty values, it can be cleared
    by specifying it in the update mask and not in the Announcement object. If
    a field that does not support empty values is included in the update mask
    and not set in the Announcement object, an `INVALID_ARGUMENT` error will be
    returned.

    The following fields may be specified by teachers:

    * `text`
    * `state`
    * `scheduled_time`
      x__xgafv: string, V1 error format.
        Allowed values
          1 - v1 error format
          2 - v2 error format

    Returns:
      An object of the form:

        { # Announcement created by a teacher for students of the course
        "updateTime": "A String", # Timestamp of the most recent change to this announcement.
            #
            # Read-only.
        "scheduledTime": "A String", # Optional timestamp when this announcement is scheduled to be published.
        "creatorUserId": "A String", # Identifier for the user that created the announcement.
            #
            # Read-only.
        "courseId": "A String", # Identifier of the course.
            #
            # Read-only.
        "text": "A String", # Description of this announcement.
            # The text must be a valid UTF-8 string containing no more
            # than 30,000 characters.
        "alternateLink": "A String", # Absolute link to this announcement in the Classroom web UI.
            # This is only populated if `state` is `PUBLISHED`.
            #
            # Read-only.
        "creationTime": "A String", # Timestamp when this announcement was created.
            #
            # Read-only.
        "assigneeMode": "A String", # Assignee mode of the announcement.
            # If unspecified, the default value is `ALL_STUDENTS`.
        "state": "A String", # Status of this announcement.
            # If unspecified, the default state is `DRAFT`.
        "materials": [ # Additional materials.
            #
            # Announcements must have no more than 20 material items.
          { # Material attached to course work.
              #
              # When creating attachments, setting the `form` field is not supported.
            "youtubeVideo": { # YouTube video item. # YouTube video material.
              "alternateLink": "A String", # URL that can be used to view the YouTube video.
                  #
                  # Read-only.
              "thumbnailUrl": "A String", # URL of a thumbnail image of the YouTube video.
                  #
                  # Read-only.
              "id": "A String", # YouTube API resource ID.
              "title": "A String", # Title of the YouTube video.
                  #
                  # Read-only.
            },
            "driveFile": { # Drive file that is used as material for course work. # Google Drive file material.
              "driveFile": { # Representation of a Google Drive file. # Drive file details.
                "thumbnailUrl": "A String", # URL of a thumbnail image of the Drive item.
                    #
                    # Read-only.
                "alternateLink": "A String", # URL that can be used to access the Drive item.
                    #
                    # Read-only.
                "id": "A String", # Drive API resource ID.
                "title": "A String", # Title of the Drive item.
                    #
                    # Read-only.
              },
              "shareMode": "A String", # Mechanism by which students access the Drive item.
            },
            "link": { # URL item. # Link material. On creation, will be upgraded to a more appropriate type
                # if possible, and this will be reflected in the response.
              "url": "A String", # URL to link to.
                  # This must be a valid UTF-8 string containing between 1 and 2024 characters.
              "thumbnailUrl": "A String", # URL of a thumbnail image of the target URL.
                  #
                  # Read-only.
              "title": "A String", # Title of the target of the URL.
                  #
                  # Read-only.
            },
            "form": { # Google Forms item. # Google Forms material.
              "formUrl": "A String", # URL of the form.
              "thumbnailUrl": "A String", # URL of a thumbnail image of the Form.
                  #
                  # Read-only.
              "responseUrl": "A String", # URL of the form responses document.
                  # Only set if respsonses have been recorded and only when the
                  # requesting user is an editor of the form.
                  #
                  # Read-only.
              "title": "A String", # Title of the Form.
                  #
                  # Read-only.
            },
          },
        ],
        "individualStudentsOptions": { # Assignee details about a coursework/announcement. # Identifiers of students with access to the announcement.
            # This field is set only if `assigneeMode` is `INDIVIDUAL_STUDENTS`.
            # If the `assigneeMode` is `INDIVIDUAL_STUDENTS`, then only students
            # specified in this field will be able to see the announcement.
            # This field is set if and only if `assigneeMode` is `INDIVIDUAL_STUDENTS`.
          "studentIds": [ # Identifiers for the students that have access to the
              # coursework/announcement.
            "A String",
          ],
        },
        "id": "A String", # Classroom-assigned identifier of this announcement, unique per course.
            #
            # Read-only.
      }