Nick Coghlan wrote:
> All,
>
> I put up a Wiki page for the idea of replacing the print statement with an
> easier to use builtin:
>
> http://wiki.python.org/moin/PrintAsFunction
>
> Cheers,
> Nick.
Looks like a good start, much better than just expressing opinions. :-)
How about making it a class?
There are several advantages such as persistent separators and being
able to have several different instances active at once.
Cheers,
Ron
import sys
class Print(object):
newline = '\n'
sep = ' '
def __init__(self, out=sys.stdout):
self.out = out
def __call__(self, *args, **kwds):
savesep = self.sep
try:
self.sep = kwds['sep']
except KeyError:
pass
for arg in args[:1]:
self.out.write(str(arg))
for arg in args[1:]:
self.out.write(self.sep)
self.out.write(str(arg))
self.sep = savesep
def ln(self, *args, **kwds):
self(*args, **kwds)
self.out.write(self.newline)
# default "builtin" instance
write = Print() # could be print in place of write in python 3k.
# standard printing
write.ln(1, 2, 3)
# print without spaces
write.ln(1, 2, 3, sep='')
# print comma separated
write.ln(1, 2, 3, sep=', ')
# or
write.sep = ', ' # remain until changed
write.ln(1, 2, 3)
write.ln(4, 5, 6)
write.sep = ' '
# print without trailing newline
write(1, 2, 3)
# print to a different stream
printerr = Print(sys.stderr)
printerr.ln(1, 2, 3)
# print a simple sequence
write.ln(*range(10))
# Print a generator expression
write.ln(*(x*x for x in range(10)))
# print to file
f = open('printout.txt','w')
fileprint = Print(f)
fileprint("hello world\n")
f.close()
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