install namex (#1020)

Author: chenmoneygithub

.github/workflows/publish-to-pypi.yml

@@ -13,6 +13,11 @@ jobs:
         pip install
         build
         --user
+    - name: Install namex
+      run: >-
+        python -m
+        pip install
+        namex
     - name: Build a binary wheel and a source tarball
       run: >-
         python pip_build.py