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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 get_pulls_list(project, auth=False, **params):
 """get pull request list"""

    params.setdefault("state", "closed")
    url = "https://api.github.com/repos/{project}/pulls".format(project=project)
    if auth:
        headers = make_auth_header()
    else:
        headers = None
    pages = get_paged_request(url, headers=headers, **params)
    return pages