When you create a new Python project or pull down a project - you need to install a fresh Python environment:

python -m venv local_python_environment

---

Activate that environment using the following command in the folder directory

.\local_python_environment\Scripts\activate

---

Install all packages from your requirements.txt using the command within your local environment

(local_python_environment) pip install -r requirements.txt

---

Before pushing to GitHub create a requirements.txt file using

pip freeze > requirements.txt

---

Also you can keep on updating it along with package installation such as

pip install requests && pip freeze > requirements.txt