Replace string within file contents

Question

How can I open a file, Stud.txt, and then replace any occurences of \"A\" with \"Orange\"?

Answer 1

with open('Stud.txt','r') as f:
    newlines = []
    for line in f.readlines():
        newlines.append(line.replace('A', 'Orange'))
with open('Stud.txt', 'w') as f:
    for line in newlines:
        f.write(line)