Question

Make a menu for the user to use in python 3 that can search and replace any given string in a file and update that file. For example

press r to replace a file

press s to search for a string and etc...

and the user will type in one of those letters to complete and update the file.

Answer 1

CODE IN PYTHON

print("Menu\n 1.Replace(r) \n2.Search(s)\n")
choice=input("Enter your choice:")
if(choice=='s'):
    file = open("4.txt", "r")
    for line in file:
        if "hello" in line: print (line)
    file.close()
elif(choice=='r'):  
    s = open("4.txt").read()
    s = s.replace('hi', 'hello')
    f = open("4.txt", 'w')
    f.write(s)
    print("The string has been replaced")
    f.close()
OUTPUT