Removed python 3.5 support

Author: MSeal

.travis.yml

@@ -2,8 +2,6 @@ language: python
 sudo: false
 matrix:
   include:
-    - python: 3.5
-      env: TOXENV=py35
     - python: 3.6
       env: TOXENV=py36
     - python: 3.7

README.md

@@ -1,7 +1,6 @@
 [![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/jupyter/nbclient/master?filepath=binder%2Frun_nbclient.ipynb)
 [![Travis Build Status](https://travis-ci.org/jupyter/nbclient.svg?branch=master)](https://travis-ci.org/jupyter/nbclient)
 [![image](https://codecov.io/github/jupyter/nbclient/coverage.svg?branch=master)](https://codecov.io/github/jupyter/nbclient?branch=master)
-[![Python 3.5](https://img.shields.io/badge/python-3.5-blue.svg)](https://www.python.org/downloads/release/python-350/)
 [![Python 3.6](https://img.shields.io/badge/python-3.6-blue.svg)](https://www.python.org/downloads/release/python-360/)
 [![Python 3.7](https://img.shields.io/badge/python-3.7-blue.svg)](https://www.python.org/downloads/release/python-370/)
 [![Python 3.8](https://img.shields.io/badge/python-3.8-blue.svg)](https://www.python.org/downloads/release/python-380/)
@@ -26,7 +25,7 @@ This library used to be part of [nbconvert](https://nbconvert.readthedocs.io/en/
 
 ## Python Version Support
 
-This library currently supports python 3.5+ versions. As minor python
+This library currently supports python 3.6+ versions. As minor python
 versions are officially sunset by the python org nbclient will similarly
 drop support in the future.
 

docs/index.rst

@@ -25,7 +25,7 @@ applications.
 Python Version Support
 ----------------------
 
-This library currently supports python 3.5+ verisons. As minor python
+This library currently supports python 3.6+ verisons. As minor python
 versions are officially sunset by the python org nbclient will similarly
 drop support in the future.
 

nbclient/client.py

@@ -2,9 +2,7 @@
 import base64
 from textwrap import dedent
 
-# For python 3.5 compatibility we import asynccontextmanager from async_generator instead of
-# contextlib, and we `await yield_()` instead of just `yield`
-from async_generator import asynccontextmanager, async_generator, yield_
+from async_generator import asynccontextmanager
 from contextlib import contextmanager
 
 from time import monotonic
@@ -410,7 +408,6 @@ def setup_kernel(self, **kwargs):
             self._cleanup_kernel()
 
     @asynccontextmanager
-    @async_generator  # needed for python 3.5 compatibility
     async def async_setup_kernel(self, **kwargs):
         """
         Context manager for setting up the kernel to execute a notebook.
@@ -426,7 +423,7 @@ async def async_setup_kernel(self, **kwargs):
         if not self.km.has_kernel:
             await self.async_start_new_kernel_client(**kwargs)
         try:
-            await yield_(None)  # would just yield in python >3.5
+            yield
         finally:
             await self._async_cleanup_kernel()
 

setup.py

@@ -51,7 +51,7 @@ def read_reqs(fname):
     long_description_content_type='text/markdown',
     packages=['nbclient'],
     include_package_data=True,
-    python_requires=">=3.5",
+    python_requires=">=3.6",
     install_requires=requirements,
     extras_require=extras_require,
     project_urls={
@@ -70,7 +70,6 @@ def read_reqs(fname):
         'License :: OSI Approved :: BSD License',
         'Programming Language :: Python',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',
         'Programming Language :: Python :: 3.7',
         'Programming Language :: Python :: 3.8',

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 skipsdist = true
-envlist = py{35,36,37,38}, flake8, dist, manifest, docs
+envlist = py{36,37,38}, flake8, dist, manifest, docs
 
 # Linters
 [testenv:flake8]
@@ -40,7 +40,6 @@ setenv =
     PYTHONHASHSEED = 0
 passenv = *
 basepython =
-    py35: python3.5
     py36: python3.6
     py37: python3.7
     py38: python3.8