Programming Forums - print problem

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- - print problem (http://www.programmingforums.org/showthread.php?t=11407)

MR.T	Sep 26th, 2006 9:48 PM

print problem

When I print something in python with a for loop it automatically skips a line after each print, like this:

0
1
2
3
4
5

How do I keep it from skipping a line so it outputs like this: 012345?

thanks

DaWei

Sep 26th, 2006 9:53 PM

Investigate the comma. That may still not suit you, so look into formatted printing. There is a ton of information on it in the Python docs. You could, of course, simply concatenate prior to the print.

Arevos

Sep 27th, 2006 7:25 AM

As DaWei says, you can use a trailing comma:

for i in range(6):
     print i,
print
# prints: 0 1 2 3 4 5

Although this has the disadvantage of placing a space between each number. Or you could concatenate the numbers together:

output = ""
for i in range(6):
    output += str(i)
print output
# prints: 012345

Or you could use a list comprehension:

print "".join(str(i) for i in range(6))
# prints 012345

Or you could use sys.stdout.write():

import sys
for i in range(6):
    sys.stdout.write(str(i))
sys.stdout.write("\n")
# prints 012345

MR.T	Sep 27th, 2006 2:56 PM

Ok, thanks for the help. I fixed my problem using the second method Arevos sugested.

peace_of_mind

Sep 27th, 2006 3:39 PM

In the future posting the code you're having trouble with will help you get more helpful posts much quicker. Glad you got it sorted out, though.

Dietrich

Sep 28th, 2006 6:46 PM

Just to be correct, our esteemed Arevos' list comprehension is really a generator expression.

free-zombie

Oct 9th, 2006 6:01 PM

... and generator expressions are new in python2.4
luckily, python2.4 will enter debian stable soon (if etch is on time), which removes my last excuse to stick with python2.3 ;)

titaniumdecoy

Oct 9th, 2006 7:00 PM

Are you kidding? The current version of Python is 2.5, you know.

Dietrich

Oct 11th, 2006 4:16 PM

Quote:

Originally Posted by titaniumdecoy (Post 116143)

Are you kidding? The current version of Python is 2.5, you know.

Unless your customer uses Python 2.3

hydroxide

Oct 23rd, 2006 1:30 PM

Quote:

Originally Posted by Dietrich (Post 116259)

Unless your customer uses Python 2.3

Heh! I've been pushing to get rid of 2.2 support from a certain project for a while -- the idioms 2.3 adds are so much nicer. Ah well... 2.5 will go stable sometime... as will 2.6... as will 2.7...

yrs obsolescent-compatibility-hurts-my-eyes-ly, -T.

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