Python Virtual Environment (venv)

Pre-Req :

• This is on Mac
• Make sure Python3 is installed in the system
• $pip3 install virtualenv #--upgrade
• $virtualenv #help

Steps:

1. create folder
2. cd inside folderName
3. $virtualenv env_name  #-p /folder_path_of_python_to_clone/bin/python
4. $source ./env_name/bin/activate
1. #if u get permission denied "$chmod -R 777 *"
2. #Note u can also have multiple environments and activate which ever u want
5. Notice "env_name" in the Terminal line meaning it is activated.
6. Try:
1. $python
2. import requests # you will get error
3. exit()
7. Try2 (make sure virtual env is still activated)
1. $pip install requests
2. $python
3. import requests
4. exit()
8. $pip freeze > requirements.txt
9. To install requirements from above file #pip install -r requirements.txt
10. $deactivate #Deactivate the env

Note:

1. To use Virtual Environment in Pycharm
2. Preferences> Settings > Add > Virtualenv 
3. Make sure it is pointing to venv