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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def set_project_avatar(self, project, avatar):
 """Set a project's avatar. :param project: ID or key of the project to set the avatar on :param avatar: ID of the avatar to set """

        self._set_avatar(
            None, self._get_url('project/' + project + '/avatar'), avatar)