feat(python): add function for show version of python, pip, venv

plugins/python/README.md

@@ -18,6 +18,7 @@ plugins=(... python)
 | `pygrep <text>`  | Looks for `text` in `*.py` files in the current directory, recursively                 |
 | `pyuserpaths`    | Add user site-packages folders to `PYTHONPATH`, for Python 2 and 3                     |
 | `pyserver`       | Starts an HTTP server on the current directory (use `--directory` for a different one) |
+| `pyver`          | Shows the current Python version, pip version, and active virtual environment (if any) |
 
 ## Virtual environments
 

plugins/python/python.plugin.zsh

@@ -120,3 +120,9 @@ if [[ "$PYTHON_AUTO_VRUN" == "true" ]]; then
   add-zsh-hook chpwd auto_vrun
   auto_vrun
 fi
+
+function pyver() {
+  echo "Python: $(python3 --version 2>&1)"
+  echo "pip: $(pip --version 2>&1)"
+  echo "Venv: ${VIRTUAL_ENV:-none}"
+}