How can you use a while loop so the user can open a new text file? Python

Question

I want to use a while loop that will give the user an opportunity to open a new text file at the end of the program. Here is the code I have:

run_again = "yes"
run_again = run_again.upper().strip()
while run_again == "yes":
    open_file = input("Please enter name of file: ")
    file_name = open(open_file,"r")
    for line in file_name:
        line = line.strip()
        rows = line.split(" ")
        num = rows[0]
        print(num)
    run_again = input("Would you like to open a new file (yes or no)? ")
    if run_again != "yes":
        print("Have a great day!")

I've managed to make a while loop work with other code but I can't get it to work with opening text files.

run_again = run_again.upper().strip() makes run_again equal to YES. Then you do while run_again == "yes": which is false right off the bat. — Blorgbeard
– Blorgbeard, Commented Sep 22, 2015 at 20:41
Some things I'd change: You should put the .upper().strip() lines inside the loop. You don't need the if statement in the loop (you are already testing with the while). You should close the file when you are done reading from it. — beroe
– beroe, Commented Sep 22, 2015 at 20:43
You could change run_again to True .. would be a lot cleaner — Onilol
– Onilol, Commented Sep 22, 2015 at 21:04

Community · Accepted Answer · 2017-05-23 11:44:25Z

1

I think something like that would work. Can't really test now.

 run_again = True
    while run_again:
        open_file = input("Please enter name of file: ")
        file_name = open(open_file,"r")
        for line in file_name:
            line = line.strip()
            rows = line.split(" ")
            num = rows[0]
            print(num)

        if input("Would you like to open a new file (yes or no)? ") != "yes":
            print("Have a great day!")
            break

Edit :

As suggested by Blorgbeard :

    while True:
        open_file = input("Please enter name of file: ")
        file_name = open(open_file,"r")
        for line in file_name:
            line = line.strip()
            rows = line.split(" ")
            num = rows[0]
            print(num)

        if input("Would you like to open a new file (yes or no)? ") != "yes":
            print("Have a great day!")
            break

edited May 23, 2017 at 11:44

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answered Sep 22, 2015 at 21:10

Onilol

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1 Comment

Blorgbeard Over a year ago

while run_again: may as well be while True: and you can remove run_again, since you never access it again.

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