Print always puts newline (or adds a space)

[Tobiah]

This is a stumbling block for me. Is there
a better way to output *just* what I want?

I want the output "foobar"

print "foo"; print "bar" foo
bar print "foo",; print "bar" foo bar
I know that I can do it in one go with
print "%s%s" % ("foo", "bar")

foobar

But the prints happen in different places
in the program.

Is there a "lower level" way to output
chars other than 'print'?

Thanks,

Tobiah

[Jarek Zgoda]

Tobiah <to**@rcsreg.com> pisze:

Is there a "lower level" way to output
chars other than 'print'?

sys.stdout.write()
--
Jarek Zgoda
Registered Linux User #-1
http://www.zgoda.biz/ JID:ja***@jabberpl.org http://zgoda.jogger.pl/

[Erik Max Francis]

Tobiah wrote:

But the prints happen in different places
in the program.
You can adjust this behavior with sys.stdout.softspace, but ultimately
the print facility is not really ideal for when you need fine control
over output.
Is there a "lower level" way to output
chars other than 'print'?

Yep, call sys.stdout.write directly.

--
Erik Max Francis && ma*@alcyone.com && http://www.alcyone.com/max/
__ San Jose, CA, USA && 37 20 N 121 53 W && &tSftDotIotE
/ \ It [freedom] must be demanded by the oppressed.
\__/ Dr. Martin Luther King, Jr.

[Tobias Pfeiffer]

Hi!

Erik Max Francis <ma*@alcyone.com> wrote in news:3F64DEF7.F98CFAB8
@alcyone.com:

Is there a "lower level" way to output
chars other than 'print'?

Yep, call sys.stdout.write directly.

Is it then also possible to "jump back" a few chars to, e.g., have a
progress... (damn, I forgot that word) however, that shows the percentage
of progress? Like print "25%" and then jump back three chars and write
"26%"?
And then, on my Linux machine, such things just don't happen at all. E.g.
in a loop like...

for i in range(1000):
j = pow(2,i)
if j%100: print "#",

....I will get nothing for a long time and then ten "#" chars at one time.
Is there a solution for that?

Bye
Tobias

[Duncan Booth]

Tobias Pfeiffer <Bo**************@web.de> wrote in
news:bk************@ID-162581.news.uni-berlin.de:

Yep, call sys.stdout.write directly.
Is it then also possible to "jump back" a few chars to, e.g., have a
progress... (damn, I forgot that word) however, that shows the
percentage of progress? Like print "25%" and then jump back three
chars and write "26%"?

Back three characters: "\b\b\b"
Back to start of line: "\r"

e.g.

for i in range(10000):

.... j = pow(2,i)
.... if j%100:
.... sys.stdout.write("\b"+"/-\\|"[i%4])
....
And then, on my Linux machine, such things just don't happen at all.
E.g. in a loop like...

for i in range(1000):
j = pow(2,i)
if j%100: print "#",

...I will get nothing for a long time and then ten "#" chars at one
time. Is there a solution for that?

Maybe sys.stdout.flush()?
--
Duncan Booth du****@rcp.co.uk
int month(char *p){return(124864/((p[0]+p[1]-p[2]&0x1f)+1)%12)["\5\x8\3"
"\6\7\xb\1\x9\xa\2\0\4"];} // Who said my code was obscure?

[Erik Max Francis]

Tobias Pfeiffer wrote:

Is it then also possible to "jump back" a few chars to, e.g., have a
progress... (damn, I forgot that word) however, that shows the
percentage
of progress? Like print "25%" and then jump back three chars and write
"26%"?
That's typically done with printing BS characters to back up one space
('\b') or CR characters to return the carriage to the beginning of the
line ('\r'). Note that strictly speaking these may not have the desired
effect, although in most environments they will.
And then, on my Linux machine, such things just don't happen at all.
E.g.
in a loop like...

for i in range(1000):
j = pow(2,i)
if j%100: print "#",

...I will get nothing for a long time and then ten "#" chars at one
time.
Is there a solution for that?

You're encounting buffering; use sys.stdout.write directly and call
sys.stdout.flush() after you've printed some partial output.

--
Erik Max Francis && ma*@alcyone.com && http://www.alcyone.com/max/
__ San Jose, CA, USA && 37 20 N 121 53 W && &tSftDotIotE
/ \ Custom reconciles us to everything.
\__/ Edmund Burke