🔥 remove future (past) requirements basestring usage, replacing wit…

…h isinstance(x, str)

🔧 change usage of utcnow() -> datetime.datetime.now(datetime.timezone.utc)

zappa/cli.py

@@ -1,6 +1,3 @@
-#!/usr/bin/env python
-# -*- coding: utf-8 -*-
-
 """
 Zappa CLI
 
@@ -38,7 +35,6 @@
 from click.exceptions import ClickException
 from click.globals import push_context
 from dateutil import parser
-from past.builtins import basestring
 
 from .core import API_GATEWAY_REGIONS, Zappa
 from .utilities import (
@@ -1635,7 +1631,7 @@ def check_environment(self, environment):
 
         non_strings = []
         for (k, v) in environment.items():
-            if not isinstance(v, basestring):
+            if not isinstance(v, str):
                 non_strings.append(k)
         if non_strings:
             raise ValueError("The following environment variables are not strings: {}".format(", ".join(non_strings)))

zappa/utilities.py

@@ -13,7 +13,6 @@
 
 import botocore
 import durationpy
-from past.builtins import basestring
 
 LOG = logging.getLogger(__name__)
 
@@ -105,16 +104,14 @@ def string_to_timestamp(timestring):
     # Uses an extended version of Go's duration string.
     try:
         delta = durationpy.from_str(timestring)
-        past = datetime.datetime.utcnow() - delta
+        past = datetime.datetime.now(datetime.timezone.utc) - delta
         ts = calendar.timegm(past.timetuple())
         return ts
     except Exception:
         pass
 
     if ts:
         return ts
-    # else:
-    #     print("Unable to parse timestring.")
     return 0
 
 
@@ -494,7 +491,7 @@ def validate_name(name, maxlen=80):
     Return: the name
     Raise: InvalidAwsLambdaName, if the name is invalid.
     """
-    if not isinstance(name, basestring):
+    if not isinstance(name, str):
         msg = "Name must be of type string"
         raise InvalidAwsLambdaName(msg)
     if len(name) > maxlen: