python that writes onto a file code example

Example 1: python write to file

with open(filename,"w") as f:
  f.write('Hello World')

Example 2: python write to file

with open("test.txt",'w',encoding = 'utf-8') as f:
   f.write("my first file\n")
   f.write("This file\n\n")
   f.write("contains three lines\n")