Problems with user input

[Florian Wilhelm]

My OS is Linux 2.6.8.1 and Python version 2.3.4

I just want to write a function that, if called,
asks a yes/no question. The user should only need
to type one char, without confirming with enter. 

I wrote a function similar to following

import sys

print "Input: (y/N) ",
input = sys.stdin.read(1)
print "Your input:", input

If I execute these lines and type "y" followed by "enter".
I get this output

Input: (y/N) y
 Your input: y

The problem is that there is a whitespace in front of the
second line, that is not generated by the second print
statement. I dont understand why it appears...

It really has nothing to do with the second "print",
because following code:

import sys

print "Input: (y/N) ",
input = sys.stdin.read(1)
print "Hello World"
print "Your input:", input

produces this output...

Input: (y/N) y
 Hello World
Your input: y

Can somebody explain why the whitespace char appears
in front of "Hello World"???