Trying access API

Im trying to access the ERPNext API, but I don’t have any return after login except the status_code, how it’s on documentation:

login = 'admin'                                                                                                                                                  
pwd = 'pass'                                                                                                                                                      
rpost = requests.post('http://crm.eranalitica.com.br/api/method/login/usr=%s&pwd=%s' % (login, pwd))                                                                     
print rpost.content

#print result: {}

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