Question

Write a python program that prompts the user for the names of two text files and compare the contents of the two files to see if they are the same. If they are, the scripts should simply output “Yes”. If they are not, the program should output “No”, followed by the first lines of each file that differ from each other. The input loop should read and compare lines from each file. The loop should break as soon as a pair of different lines is found.

Note: Input file will be given by me for testing. You should create your own file and check your program running on that file. You don’t need to attach the txt file. First file name: Master.txt Second file name: Slave.txt

Answer 1

#------main.py-----
#python3
#method that takes two files and compares them line by line
#and prints the comparision result.
def compareFile(one,two):
try:
#using with open the two files..
with open(one,"r") as master, open(two,"r") as slave:
#read one line from master and slave as well
lineOne = master.readline()
lineTwo = slave.readline()
#till any one of the files are reached to end.
while(lineOne and lineTwo):
#print two lines striped ones, just for printing, while comparing no striping is done
print(lineOne.strip())
print(lineTwo.strip())
#convert the two lines into lower case and compare them for equal
#note: if any one of the files having spaces at the start or at the end
#and the other one dont have spaces considered not same
#if you want to remove spaces and then compare please replace the if condition
#with below if statement.
#if(lineOne.strip().lower() == lineTwo.strip().lower())
if(lineOne.lower() == lineTwo.lower()):
#if same print yes
print("Yes")
else:
#if not print no and break.
print("No")
break
#read next lines from two files.
lineOne = master.readline()
lineTwo = slave.readline()
#after the end of while loop there may be a condition that
#one of the files are read completely and next are not
#so at that situation
#on successfull completion of reading entire file variables have eof or null
#using that value if the lineOne is not having null and lineTwo is having null(not null is True)
#or the vice versa
#then that situation is files are not same.
if((lineOne and not lineTwo) or (not lineOne and lineTwo)):
#so print lines and print no;
#if you want to remove print statements please comment them.
print(lineOne)
print(lineTwo)
print("No")
#if any exception got while reading or opening print the message
except Exception as e:
print("Error occured while processing: ",e)
#function that takes user input for two files. and returns them.
def getFiles():
one = input("Enter first File Name: ").strip()
two = input("Enter second File name: ").strip()
return one,two

#get user input for files.
one,two = getFiles()
#call compareFile(one,two) by passing user enter files.
compareFile(one,two)

#--------------- Master.txt ----------------

Write a python program that prompts the user for the names of two text files
and compare the contents of the two files to see if they are the same.
If they are, the scripts should simply output “Yes”.
If they are not, the program should output “No”,
followed by the first lines of each file that differ from each other.
The input loop should read and compare lines from each file.
The loop should break as soon as a pair of different lines is found.

#------------------ Slave.txt ------------------

Write a python program that prompts the user for the names of two text files
and compare the contents of the two files to see if they are the same.
If they are, the scripts should simply output “Yes”.
If they are not, the program should output “No”,
followed by the first lines of each file that differ from each other.
The input loop should read and compare lines from each file.
The loop should break as soon as a pair of different lines is found.

#if you have any doubts please comment and please like the answer.