combine and print different variables on one line-CodePudding

I'm making a simple script on Python 3. I have a list of usernames, colors and numbers. Each of them separated by lines in a .txt file, like this:

Files image:

This is the code:

user = open('user.txt', 'r').readlines()
color = open('color.txt', 'r').readlines()
number = open('number.txt', 'r').readlines()

for u in user:
    for c in color:
        for n in number:
            generated = u c n
            print(generated)
            open('generated.txt', 'a ').write(generated)

First 100 outputs: https://pastebin.com/Dc07ApbL

But I want something like this:

solvethisproblem_userwhite1
solvethisproblem_userwhite2
solvethisproblem_userwhite3
solvethisproblem_userwhite4
solvethisproblem_userwhite5
solvethisproblem_userwhite6
solvethisproblem_userwhite7
solvethisproblem_userwhite8
solvethisproblem_userwhite9
solvethisproblem_userwhite10
solvethisproblem_userblack1
solvethisproblem_userblack2
solvethisproblem_userblack3
solvethisproblem_userblack4
solvethisproblem_userblack5
solvethisproblem_userblack6
solvethisproblem_userblack7
solvethisproblem_userblack8
solvethisproblem_userblack9
solvethisproblem_userblack10
solvethisproblem_useryellow1
solvethisproblem_useryellow2
solvethisproblem_useryellow3

CodePudding user response：

Using str.rstrip gets rid of the newline character and any whitespace at the end of the string:

generated = ''.join(map(str.rstrip, [u, c, n]))

CodePudding user response：

Simply replace

user = open('user.txt', 'r').readlines()
color = open('color.txt', 'r').readlines()
number = open('number.txt', 'r').readlines()

with

user = open('user.txt', 'r').read().splitlines()
color = open('color.txt', 'r').read().splitlines()
number = open('number.txt', 'r').read().splitlines()

and replace generated = u c n with generated = u c n "\n".

The str.splitlines() method removes the \n characters that would cause the newlines.

But do note that is is better practice to use the with keyword to open your files:

with open('user.txt') as u, open('color.txt') as c, open('number.txt') as n:
    user = u.read().splitlines()
    color = c.read().splitlines()
    number = n.read().splitlines()