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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 list_surveys(session):
 """retrieve a list of surveys from current user"""

    params = {'sUser': session['user'], 'sSessionKey': session['token']}
    data = set_params('list_surveys', params)
    req = requests.post(session['url'], data=data, headers=headers)
    return req.text