Hi people
I'm getting a little annoyed with the way the print function always adds a
space character between print statements unless there has been a new line.
The manual mentions that "In some cases it may be functional to write an
empty string to standard output for this reason." Am I the only the who
thinks that this sucks? It's the first thing I've come across in Python that
I really think is a design flaw.
Is there a good way to stop the space being automatically generated, or am I
going to have to write a blank string to standard output, like the manual
mentions?
Cheers
Dan 9 2049
On Thu, 05 Feb 2004 11:38:26 +0000, Dan Williams wrote: Is there a good way to stop the space being automatically generated, or am I going to have to write a blank string to standard output, like the manual mentions?
I don't know if these are good ways, but i found this information about
the topic on google: http://www-106.ibm.com/developerwork...html?dwzone=ws
"The part about concatenation is important here" http://www.faqts.com/knowledge_base/view.phtml/aid/4465
"How to turn off the automatic space completely"
and i tried to implement the concatenation part into a small function
(beware as i am new to python too ;)):
---snip----
#/usr/bin/env python
def PrintWithoutSpa ces(*args):
output = ""
for i in args:
output = output + i
print output
if __name__ == "__main__":
PrintWithoutSpa ces("yo", "hello", "gutentag")
---snip----
this prints "yohellogutenta g"
--
_______________ _______________ _______________ _______________ _____
Bjoern Paschen ._--_. Panasonic AVC Networks Germany GmbH pa*****@mavd.de -- Audio Video Technology Centre
> def PrintWithoutSpa ces(*args): output = "" for i in args: output = output + i
print output
if __name__ == "__main__": PrintWithoutSpa ces("yo", "hello", "gutentag") ---snip----
this prints "yohellogutenta g"
You function won't work on mixed-type args:
PrintWithoutSpa ces("a", 10)
Traceback (most recent call last):
File "<stdin>", line 1, in ?
File "<stdin>", line 4, in PrintWithoutSpa ces
TypeError: cannot concatenate 'str' and 'int' objects
A better way would be this:
def myprint(*args):
print "".join([str(x) for x in args])
> Is there a good way to stop the space being automatically generated, or am I going to have to write a blank string to standard output, like the >
manual mentions?
You can try the write() method of file-like objects:
import sys
sys.stdout.writ e('%s test\n'%'This is a')
print is a convenience, not necessarily a fine-grained formatting tool
from what I understand.
Rich
On Thu, 2004-02-05 at 08:17, Diez B. Roggisch wrote: def PrintWithoutSpa ces(*args): output = "" for i in args: output = output + i
print output
if __name__ == "__main__": PrintWithoutSpa ces("yo", "hello", "gutentag") ---snip----
this prints "yohellogutenta g"
You function won't work on mixed-type args:
PrintWithoutSpa ces("a", 10) Traceback (most recent call last): File "<stdin>", line 1, in ? File "<stdin>", line 4, in PrintWithoutSpa ces TypeError: cannot concatenate 'str' and 'int' objects
A better way would be this:
def myprint(*args): print "".join([str(x) for x in args])
Dan Williams wrote: Hi people
I'm getting a little annoyed with the way the print function always adds a space character between print statements unless there has been a new line. The manual mentions that "In some cases it may be functional to write an empty string to standard output for this reason." Am I the only the who thinks that this sucks? It's the first thing I've come across in Python that I really think is a design flaw.
Is there a good way to stop the space being automatically generated, or am I going to have to write a blank string to standard output, like the manual mentions?
Cheers
Dan
Dan,
'Does seem a little odd. There's often a good reason
for python "oddities". Usually, it's a matter of practicality.
Maybe it was thought that most intended uses of print are
better of with a space. a="a" b="b" print "%s%s" % (a,b)
ab
Hello Dan, Is there a good way to stop the space being automatically generated, or am I going to have to write a blank string to standard output, like the manual mentions?
I use the % formatting and find it much better.
HTH.
Miki
On Thu, 05 Feb 2004 14:17:05 +0100, Diez B. Roggisch wrote: You function won't work on mixed-type args: A better way would be this:
def myprint(*args): print "".join([str(x) for x in args])
Thanks. Works like a charm :)
--
_______________ _______________ _______________ _______________ _____
Bjoern Paschen ._--_. Panasonic AVC Networks Germany GmbH pa*****@mavd.de -- Audio Video Technology Centre
In article <bv************ @ID-111250.news.uni-berlin.de>,
"Diez B. Roggisch" <no**********@w eb.de> wrote: def PrintWithoutSpa ces(*args): output = "" for i in args: output = output + i
print output
[ ... ]You function won't work on mixed-type args:
PrintWithoutSp aces("a", 10) Traceback (most recent call last): File "<stdin>", line 1, in ? File "<stdin>", line 4, in PrintWithoutSpa ces TypeError: cannot concatenate 'str' and 'int' objects
A better way would be this:
def myprint(*args): print "".join([str(x) for x in args])
True. Or just `output = output + str(i)` .
The `str(i)` is the vital part.
If the output string gets big, it will become plain that
`"".join`... shown above is faster.
Regards. Mel.
Hey folks - got an interesting problem here.
I have an embedded Python interpreter and I'm packing the app,
python23.dll, and a subset of the Python 23 Lib directory for the utility
modules I need to use (so far, only os and random). I also need to use
numarray and I've copied the numarray directory into my standalone Lib
directory.
Within my code, I have set sys.path to point to my standalone Lib
directory, so in theory it shouldn't be looking in C:/Python23 for any
modules, but when I try to import numarray I see it still sees C:/Python23.
What other stuff do I need to do to make my integrated interpreter and
scripts I load to only see my standalone Lib directory as the Python library?
I hope this makes sense!
"Dan Williams" <da*@ithium.net > writes: I'm getting a little annoyed with the way the print function always adds a space character between print statements unless there has been a new line.
Print is a statement, not a function.
The manual mentions that "In some cases it may be functional to write an empty string to standard output for this reason." Am I the only the who thinks that this sucks? It's the first thing I've come across in Python that I really think is a design flaw.
It's sort of a legacy thing, I believe. I don't like it either. It goes
against the Python principle that explicit is better than implicit. If
I want a space in the output, I'd rather ask for one. This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
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Could be called 'printn' or 'prin1' or 'prinn' anything similar you
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Here is a pre-PEP about print that I wrote recently.
Please let me know what is the community's opinion on it.
Cheers,
Marcin
PEP: XXX
Title: Print Without Intervening Space
Version: $Revision: 0.0 $
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