updated github workflow action to use python3

.github/workflows/python-publish.yml

@@ -8,22 +8,33 @@ permissions:
 jobs:
   build-n-publish:
     name: Build and publish Python 🐍 distributions 📦 to PyPI
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@master
     - name: Set up Python 3.7
       uses: actions/setup-python@v1
       with:
         python-version: 3.7
+
+    - name: remove old pip
+      run: sudo apt remove python-pip
+
+    - name: wget get-pip.py
+      run:  wget https://bootstrap.pypa.io/get-pip.py
+
+    - name: install pip
+      run: python3 get-pip.py
+
     - name: Install pypa/build
       run: >-
-        python -m
+        python3 -m
         pip install
         build
         --user
+
     - name: Build a binary wheel and a source tarball
       run: >-
-        python -m
+        python3 -m
         build
         --sdist
         --wheel

ez_setup.py

@@ -70,9 +70,10 @@ def _validate_md5(egg_name, data):
     if egg_name in md5_data:
         digest = md5(data).hexdigest()
         if digest != md5_data[egg_name]:
-            print >>sys.stderr, (
+            print(
                 "md5 validation of %s failed!  (Possible download problem?)"
-                % egg_name
+                % egg_name,
+                file=sys.stderr
             )
             sys.exit(2)
     return data
@@ -103,14 +104,14 @@ def do_download():
         return do_download()       
     try:
         pkg_resources.require("setuptools>="+version); return
-    except pkg_resources.VersionConflict, e:
+    except pkg_resources.VersionConflict as e:
         if was_imported:
-            print >>sys.stderr, (
-            "The required version of setuptools (>=%s) is not available, and\n"
-            "can't be installed while this script is running. Please install\n"
-            " a more recent version first, using 'easy_install -U setuptools'."
-            "\n\n(Currently using %r)"
-            ) % (version, e.args[0])
+            print((
+                "The required version of setuptools (>=%s) is not available, and\n"
+                "can't be installed while this script is running. Please install\n"
+                "a more recent version first, using 'easy_install -U setuptools'."
+                "\n\n(Currently using %r)"
+            ) % (version, e.args[0]), file=sys.stderr)
             sys.exit(2)
     except pkg_resources.DistributionNotFound:
         pass
@@ -159,7 +160,7 @@ def download_setuptools(
             # Read/write all in one block, so we don't create a corrupt file
             # if the download is interrupted.
             data = _validate_md5(egg_name, src.read())
-            dst = open(saveto,"wb"); dst.write(data)
+            dst = open(saveto, "wb"); dst.write(data)
         finally:
             if src: src.close()
             if dst: dst.close()
@@ -216,13 +217,14 @@ def main(argv, version=DEFAULT_VERSION):
                 os.unlink(egg)
     else:
         if setuptools.__version__ == '0.0.1':
-            print >>sys.stderr, (
+            msg = (
             "You have an obsolete version of setuptools installed.  Please\n"
             "remove it from your system entirely before rerunning this script."
             )
+            print(msg, file=sys.stderr)
             sys.exit(2)
 
-    req = "setuptools>="+version
+    req = "setuptools>=" + version
     import pkg_resources
     try:
         pkg_resources.require(req)
@@ -238,8 +240,8 @@ def main(argv, version=DEFAULT_VERSION):
             from setuptools.command.easy_install import main
             main(argv)
         else:
-            print "Setuptools version",version,"or greater has been installed."
-            print '(Run "ez_setup.py -U setuptools" to reinstall or upgrade.)'
+            print("Setuptools version",version,"or greater has been installed.")
+            print('Run "ez_setup.py -U setuptools" to reinstall or upgrade.')
 
 def update_md5(filenames):
     """Update our built-in md5 registry"""
@@ -262,7 +264,7 @@ def update_md5(filenames):
 
     match = re.search("\nmd5_data = {\n([^}]+)}", src)
     if not match:
-        print >>sys.stderr, "Internal error!"
+        print("Internal error!", file=sys.stderr)
         sys.exit(2)
 
     src = src[:match.start(1)] + repl + src[match.end(1):]