Update readme

python/README.md

@@ -5,6 +5,8 @@ Requirements:
 
 ## Setting up environment
 
+### Recommended: Using Poetry
+
 Project uses [Poetry](https://python-poetry.org), ultimate dependency management software for Python.
 
 Install Poetry:
@@ -17,6 +19,23 @@ Install virtual environment:
 poetry install
 ```
 
+### Simple: Using virtualenv
+
+Create virtual environment:
+```sh
+virtualenv .env
+```
+
+Activate virtual environment:
+```sh
+source .env/bin/activate
+```
+
+Install required dependencies:
+```sh
+pip install -r requirements.txt
+```
+
 ## Running demo
 
 Check `demo.py` for usage example.
@@ -29,7 +48,15 @@ FAIRHOPPER_HOST = "http://127.0.0.1:8010"
 
 Activate environment and run example:
 
+### Poetry
+
 ```sh
 poetry shell
 python demo.py
 ```
+
+### Virtualenv
+```sh
+source .env/bin/activate
+python demo.py
+```