CODEWITHSUNDEEP
pythonpython-3.x
BrokenAngeLa
BrokenAngeLa

Reputation: 23

Length of lines python reads from stdin

I have a problem why this code. Why does the string length not match with my input?

input: a 
output: 2

from sys import stdin
for line in stdin:
  print(len(line))

Upvotes: 2

Views: 1093

Answers (2)

Jean-François Fabre
Jean-François Fabre

Reputation: 140168

like any file-like iterator, stdin yields lines with linefeeds/newlines when iterated upon. Which explains you get an extra char when counting.

You could use rstrip("\n") to make the count right (remove right hand newline):

from sys import stdin
for line in stdin:
  print(len(line.rstrip("\n")))

(note that substracting 1 to the result also works)

Upvotes: 2

sngjuk
sngjuk

Reputation: 1017

I guess it also contains your linefeed character '\n'

try this code :

from sys import stdin
for line in stdin:
    for x in line:
        print(x)

Upvotes: 1

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