open().read() python 3 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("testfile.txt", "w") as f:
  # "w" - write into file
  # "r" - read into file
  # "+" - read and write into file
  f.write("Hello World")