Removing spaces in python input

Question

I've been trying to use .upper and .replace to turn non standard input like "helLo woRLD" to "HELLOWORLD" to make it easier to handle.

This seems so simple, and it works fine to turn it to uppercase, but it simply won't remove the spaces.

Code:

cmd = input("Please input a command: ")
cmd = cmd.upper()
cmd.replace(" ","")
print("%s" % (cmd))

With this, if I enter "Hello World" it would print "HELLO WORLD" with the spaces still there, and I have no idea why it's not working.

EDIT: This is embarrassing, I just realized a literally had to do

cmd = cmd.replace(" ","")

instead of what I had, flagging this because I figured it out

Why use multiple lines when a single one will do? :) print(input("Please input a command: ").upper().replace(" ","")) — jrennie
– jrennie, Commented Mar 15, 2014 at 20:34
Thank you for the 'embarressing' edit, It saved me some time :) — Arthur Bowers
– Arthur Bowers, Commented Mar 7, 2023 at 14:57

devnull · Accepted Answer · 2014-03-15 20:16:15Z

9

Strings in python are immutable. Instead of

cmd.replace(" ","")

say

cmd = cmd.replace(" ","")

You could also combine the two commands:

cmd = cmd.upper().replace(" ", "")

answered Mar 15, 2014 at 20:16

devnull

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tags · Accepted Answer · 2014-03-15 20:24:43Z

0

cmd = input("Please input a command: ")
ans = cmd.upper().replace(" ","")
print("%s" % (ans))

answered Mar 15, 2014 at 20:24

Comments

drinking · Accepted Answer · 2014-03-16 01:54:06Z

0

This also works,but is not the best solution.

cmd="hello world"
print("%s" % ("".join(cmd.upper().split(" "))))

answered Mar 16, 2014 at 1:54

drinking

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Hrishit Dey · Accepted Answer · 2020-10-01 06:53:57Z

0

    while True :
        Word = input('enter string?')
        word = Word.strip()
        print(word)
        #this is the best option as far i am concerned to take input and 
        #removing  whitespaces
        #you can use this if you do not want to take any input
        #Word = 'string  of  a  thing  funny  ? '
        #word = Word.strip()
        #print(word)

answered Oct 1, 2020 at 6:53

Hrishit Dey

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