opening a file in "write" mode allows to add contents code example

Example 1: how to save to file in python

with open('data.txt', 'w') as my_data_file:
   my_data_file.write(WhateverYourInputIs)
# After leaving the above block of code, the file is closed
# "w" overwrites the contents of the file

Example 2: freecodecamp python write to file

f = open("data/names.txt", "a+") # Read + Append