parameters: (service_name)
return_statement: return None
docstring: Finds the scope URLs for the desired service.
  
    In some cases, an unknown service may be used, and in those cases this
    function will return None.
docstring_summary: Finds the scope URLs for the desired service.
docstring_tokens: Finds the scope URLs for the desired service .
function: def lookup_scopes(service_name):
    """Finds the scope URLs for the desired service.
  
    In some cases, an unknown service may be used, and in those cases this
    function will return None.
    """
    if service_name in CLIENT_LOGIN_SCOPES:
      return CLIENT_LOGIN_SCOPES[service_name]
    return None
function_tokens: def lookup_scopes ( service_name ) : if service_name in CLIENT_LOGIN_SCOPES : return CLIENT_LOGIN_SCOPES [ service_name ] return None