Drop py2 support (#117)

Fixes #113

Author: ferhatelmas

.travis.yml

@@ -1,6 +1,5 @@
 language: python
 python:
-  - 2.7
   - 3.4
   - 3.5
   - 3.6
@@ -21,6 +20,6 @@ script:
   - echo $STREAM_KEY
   - py.test -lv --cov=./
 after_script:
-  - "pep8 --exclude=migrations --ignore=E501,E225,W293 stream"
-  - "python setup.py install"
-  - "codecov"
+  - 'pep8 --exclude=migrations --ignore=E501,E225,W293 stream'
+  - 'python setup.py install'
+  - 'codecov'

README.md

@@ -13,7 +13,7 @@ You can sign up for a Stream account at https://getstream.io/get_started.
 
 stream-python supports:
 
-- Python (2.7, 3.4, 3.5, 3.6, 3.7, 3.8)
+- Python (3.4, 3.5, 3.6, 3.7, 3.8)
 
 #### Install from Pypi
 

setup.py

@@ -6,24 +6,16 @@
 from stream import __version__, __maintainer__, __email__, __license__
 import sys
 
-unit = "unittest2py3k" if sys.version_info > (3, 0, 0) else "unittest2"
-tests_require = [unit, "pytest==3.2.5", "unittest2", "pytest-cov", "python-dateutil"]
+tests_require = ["pytest==3.2.5", "unittest2", "pytest-cov", "python-dateutil"]
 
 long_description = open("README.md", "r").read()
 
-requests = "requests>=2.3.0,<3"
-
-if sys.version_info < (2, 7, 9):
-    requests = "requests[security]>=2.4.1,<3"
-
-install_requires = ["pycryptodomex>=3.4.7,<4", requests, "six>=1.8.0", "pytz>=2019.3"]
-
-if sys.version_info < (2, 7, 0):
-    install_requires.append("pyOpenSSL<18.0.0")
-    install_requires.append("pyjwt>=1.3.0,<1.6.0")
-    install_requires.append("pycparser<2.19")
-else:
-    install_requires.append("pyjwt>=1.3.0,<1.8.0")
+install_requires = [
+    "pycryptodomex>=3.4.7,<4",
+    "requests>=2.3.0,<3",
+    "pyjwt>=1.3.0,<1.8.0",
+    "pytz>=2019.3",
+]
 
 
 class PyTest(TestCommand):
@@ -65,7 +57,6 @@ def run_tests(self):
         "Development Status :: 5 - Production/Stable",
         "License :: OSI Approved :: BSD License",
         "Natural Language :: English",
-        "Programming Language :: Python :: 2.7",
         "Programming Language :: Python :: 3",
         "Programming Language :: Python :: 3.4",
         "Programming Language :: Python :: 3.5",

stream/serializer.py

@@ -1,6 +1,5 @@
 import datetime
 import json
-import six
 import pytz
 
 """
@@ -30,7 +29,7 @@ def _datetime_decoder(dict_):
             dict_[key] = ""
             continue
 
-        if value is not None and isinstance(value, six.string_types):
+        if value is not None and isinstance(value, str):
             try:
                 # The api always returns times like this
                 # 2014-07-25T09:12:24.735