how to replace one or more spaces python code example

Example 1: replace multiple spaces with single space python

' '.join(mystring.split())

Example 2: Write a python program that allows you to erase multiple spaces in a text file

fin = open("data.txt", "rt")
fout = open("out.txt", "wt")

for line in fin:
	fout.write(' '.join(line.split()))
	
fin.close()
fout.close()