create python virtual environment

.gitignore

+# ignore any virtual environment
+*venv

README.md

+# README
+
+# First create a python virtual environment
+
+```bash
+python3 -m venv demo_venv
+```
+
+Activate the python environment
+```bash
+source demo_venv/bin/activate
+```
+
+Verify that you are in the virtual environment
+```bash
+which pip
+$ ~/tiqi-js-tutorial/demo_venv/bin/pip
+which python
+$ ~/tiqi-js-tutorial/demo_venv/bin/python
+```
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