Removed support for python 2.7

Author: adityajaroli

.github/workflows/unit_test_execution.yml

@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-20.04
     strategy:
       matrix:
-        python-version: ["2.7", "3.5", "3.6", "3.9"]
+        python-version: ["3.5", "3.6", "3.9"]
     name: Python ${{ matrix.python-version }}
     steps:
       - uses: actions/checkout@v2

.travis.yml

@@ -3,8 +3,6 @@ sudo: false
 cache: pip
 matrix:
   include:
-    - python: 2.7
-      env: TOXENV=py27
     - python: 3.5
       env: TOXENV=py35
     - python: 3.6

setup.py

@@ -35,7 +35,6 @@ def read(*names, **kwargs):
         "Operating System :: POSIX",
         "Operating System :: Microsoft :: Windows",
         "Programming Language :: Python",
-        "Programming Language :: Python :: 2.7",
         "Programming Language :: Python :: 3.5",
         "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.9",

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py{27,35,36,39}
+envlist = py{35,36,39}
 
 [testenv]
 deps =