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Python | Technical Handbook

Install virtualenv for Python3

Solution
sudo apt-get install python3-pip
sudo pip3 install virtualenv
virtualenv -p python3 myenv
source venv/bin/activate

Source-https://gist.github.com/Geoyi/d9fab4f609e9f75941946be45000632b

Search and Replace a word in the file using Python

Solution
# Read and save file content
with open('file.txt', 'r') as file :
filedata = file.read()
# Replace words with new ones.
filedata = filedata.replace('abc', 'def')
# Overwrite the file with new contents
with open('file.txt', 'w') as file:
file.write(filedata)

Open and read the file and replace the necessary words. Later write modified content to the same file.<br/>Source-https://stackoverflow.com/a/17141572/6903724

FLASK_ENV = 'development' not activating debug mode

Solution
Along with FLASK_ENV = 'development', add FLASK_DEBUG = 1 in the flask env file. Or run this command - export FLASK_DEBUG=1

Source: https://stackoverflow.com/questions/61584680/flask-not-activating-debug-mode

Flask - oauthlib.oauth2.rfc6749.errors.MismatchingStateError: (mismatching_state) CSRF Warning! State not equal in request and response.

Solution
Use 'Flow' instead of' 'InstalledAppFlow' from 'from google_auth_oauthlib.flow'

By using the 'web' key in the CLIENT_CONFIG dictionary, you indicate that you're configuring the OAuth flow for a web application

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