Removing restriction of mandatory fields in list()

Cisco Spark APIs has now made "displayName" and "email" as optional fields to list the people in an organization. Changing the code in such a way that "displayName" and "email" specification are optional.

Author: Deepar3292

ciscosparkapi/api/people.py

@@ -131,9 +131,7 @@ def __init__(self, session):
 
     @generator_container
     def list(self, email=None, displayName=None, max=None):
-        """List people by email or displayName.
-
-        An email address or displayName must be provided.
+        """List people
 
         This method supports Cisco Spark's implementation of RFC5988 Web
         Linking to provide pagination support.  It returns a generator
@@ -158,8 +156,6 @@ def list(self, email=None, displayName=None, max=None):
 
         Raises:
             AssertionError: If the parameter types are incorrect.
-            ciscosparkapiException: If neither an email or displayName argument
-                is specified.
             SparkApiError: If the Cisco Spark cloud returns an error.
 
         """
@@ -172,10 +168,6 @@ def list(self, email=None, displayName=None, max=None):
             params['email'] = email
         elif displayName:
             params['displayName'] = displayName
-        else:
-            error_message = "An email or displayName argument must be " \
-                            "specified."
-            raise ciscosparkapiException(error_message)
         if max:
             params['max'] = max
         # API request - get items