updated github workflow action to use python3

.github/workflows/python-publish.yml

@@ -1,39 +1,55 @@
-# This workflow will upload a Python Package using Twine when a release is created
-# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-python#publishing-to-package-registries
-
-# This workflow uses actions that are not certified by GitHub.
-# They are provided by a third-party and are governed by
-# separate terms of service, privacy policy, and support
-# documentation.
-
 name: Upload Python Package git maildiff
 
-on:
-  release:
-    types: [published]
+on: push
 
 permissions:
   contents: read
 
 jobs:
-  deploy:
-
+  build-n-publish:
+    name: Build and publish Python 🐍 distributions 📦 to PyPI
     runs-on: ubuntu-latest
-
     steps:
-    - uses: actions/checkout@v3
-    - name: Set up Python
-      uses: actions/setup-python@v3
+    - uses: actions/checkout@master
+    - name: Set up Python 3.7
+      uses: actions/setup-python@v1
       with:
-        python-version: '3.x'
-    - name: Install dependencies
-      run: |
-        python -m pip install --upgrade pip
-        pip install build
-    - name: Build package
-      run: python -m build
-    - name: Publish package
-      uses: pypa/gh-action-pypi-publish@master
+        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: setuptools version
+      run: >-
+        python3 -c 
+        "import setuptools; from setuptools import build_meta; print('Build meta: {}'.format(build_meta)); print(setuptools.__version__)"
+
+    - name: Install pypa/build
+      run: >-
+        python3 -m
+        pip install
+        build
+        --user
+
+    - name: Build a binary wheel and a source tarball
+      run: >-
+        python3 -m
+        build
+        --sdist
+        --wheel
+        --outdir dist/
+        .
+  
+    - name: Publish distribution 📦 to PyPI
+      if: startsWith(github.ref, 'refs/tags')
+      uses: pypa/gh-action-pypi-publish@release/v1
       with:
         user: __token__
         password: ${{ secrets.PYPI_API_TOKEN }}
+