Drop support of Python 2.7

Closes HDE#65

Author: Susannah Klaneček

.gitignore

@@ -61,3 +61,7 @@ target/
 
 # Vitual Environments
 venv/
+.env/
+
+# direnv
+.envrc

README.md

@@ -8,7 +8,7 @@ Run lambda function on local machine
 
 ## Prepare development environment
 
-Please use a newly created virtualenv of Python 2.7 or Python 3.7.
+Please use a newly created virtualenv of Python 3.7+.
 
 ## Installation
 

README.rst

@@ -9,7 +9,7 @@ Run lambda function on local machine
 Prepare development environment
 -------------------------------
 
-Please use a newly created virtualenv of Python 2.7 or Python 3.7.
+Please use a newly created virtualenv of Python 3.7+.
 
 Installation
 ------------

lambda_local/timeout.py

@@ -6,7 +6,7 @@
 import signal
 import threading
 from contextlib import contextmanager
-from six.moves import _thread
+import _thread
 
 
 class TimeoutException(Exception):

setup.py

@@ -37,7 +37,6 @@ def run_tests(self):
           'Development Status :: 3 - Alpha',
           'Operating System :: POSIX',
           'Programming Language :: Python',
-          'Programming Language :: Python :: 2.7',
           'Programming Language :: Python :: 3.7',
           'Programming Language :: Python :: 3.8',
           'License :: OSI Approved :: MIT License'

wercker.yml

@@ -3,34 +3,6 @@ box: python:3-slim
 build:
   steps:
 
-build-py2:
-  box: python:2.7-slim
-  steps:
-    - script:
-        name: virtualenv install
-        code: |
-          pip install virtualenv
-
-    - virtualenv:
-        name: setup virtual environment
-        install_wheel: true
-
-    - script:
-        name: echo python information
-        code: |
-          echo "python version $(python --version) running"
-          echo "pip version $(pip --version) running"
-
-    - script:
-        name: build
-        code: |
-          python setup.py sdist bdist_wheel
-
-    - script:
-        name: test
-        code: |
-          python setup.py test
-
 build-py37:
   box: python:3.7-slim
   steps: