Question

Restrictions • You're not allowed to make more than one pass reading a file • You’re not allowed to modify the input file in any way • The only functions you're allowed to use are: open, close, read, write, readline, range, len, append, next, split, strip, join

2. Text replacement Write a function replace_text that takes three parameters, a file name and two strings (not words!), and creates a new file named output.txt that is a copy of the input file where every occurrence of the second parameter has been replaced by the third parameter.

Answer 1

Please comment below for any queries...
Please don't forget to upvote if the answer is helpful thanks..

Executable Code:

def replace_text(inFile, firstString, secondString):
    lines = open(inFile).read()
    writer = open('output.txt', 'w')
    l=secondString.join(lines.split(firstString))
    writer.write(l)
    writer.close()

#Sample Output:

replace_text('input.txt', 'Baa, Baa, Black Sheep' , 'Bee, Bee, White Sheep')

input.txt

output.txt after executing :