Python 3.8+ complains about using "is" with literals in api_helper.py

[rspellman]

🐛 Bug Report

I'm running Python 3.9.6 on OSX. I have installed the managemeht-sdk-python module from cohesity github according to the instructions. When running any of the samples, Python complains with a warming for all uses of the syntax 'if variable is "something"' where "something" is a string literal or number.

One solution is to find all instances in api_helper.py and replace "is" with "==". Here's output from a git diff with the changes:

--- a/cohesity_management_sdk/api_helper.py
+++ b/cohesity_management_sdk/api_helper.py
@@ -119,11 +119,11 @@ class APIHelper(object):
             serializable_types = (str, int, float, bool, datetime.date, APIHelper.CustomDate)

         if isinstance(array[0], serializable_types):
-            if formatting is "unindexed":
+            if formatting == "unindexed":
                 tuples += [("{0}[]".format(key), element) for element in array]
-            elif formatting is "indexed":
+            elif formatting == "indexed":
                 tuples += [("{0}[{1}]".format(key, index), element) for index, element in enumerate(array)]
-            elif formatting is "plain":
+            elif formatting == "plain":
                 tuples += [(key, element) for element in array]
             else:
                 raise ValueError("Invalid format provided.")
@@ -193,13 +193,13 @@ class APIHelper(object):
             if value is not None:
                 if isinstance(value, list):
                     value = [element for element in value if element]
-                    if array_serialization is "csv":
+                    if array_serialization == "csv":
                         url += "{0}{1}={2}".format(seperator, key,
                             ",".join(quote(str(x), safe='') for x in value))
-                    elif array_serialization is "psv":
+                    elif array_serialization == "psv":
                         url += "{0}{1}={2}".format(seperator, key,
                             "|".join(quote(str(x), safe='') for x in value))
-                    elif array_serialization is "tsv":
+                    elif array_serialization == "tsv":
                         url += "{0}{1}={2}".format(seperator, key,
                             "\t".join(quote(str(x), safe='') for x in value))
                     else: