[Python-Dev] Pascaloid print substitute (Replacement for print in Python 3.0) (original) (raw)

Greg Ewing greg.ewing at canterbury.ac.nz
Mon Sep 5 03:53:01 CEST 2005

Here's a non-statement print substitute that provides space insertion and newline suppression, and as a bonus it allows Pascal-style numeric formatting.

Usage examples:

Print["The answer is", 42] Print["Tons of spam:", n:6] Print[x:5:2, "squared is", x*x:10:4] Print["One", "Two", ...] Print["Buckle my shoe"]

#----------------------------------------------------

import sys

class PasFormat(object):

def init(self, f): self.f = f

def getitem(self, arg): #print "PasFormat.getitem:", arg if isinstance(arg, tuple): space = "" for item in arg: self.f.write(space) if item is Ellipsis: break self._do(item) space = " " else: self.f.write("\n") else: self._do(arg) self.f.write("\n")

def _do(self, item): if isinstance(item, slice): value = item.start width = item.stop or 0 decimals = item.step else: value = item width = 0 decimals = None if decimals is not None: chars = "%*.*f" % (width, decimals, value) else: chars = "%*s" % (width, value) self.f.write(chars)

Print = PasFormat(sys.stdout)

if name == "main": n = 666 x = 3.1415

Print["The answer is", 42] Print["Tons of spam:", n:6] Print[x:5:2, "squared is", x*x:10:4] Print["One", "Two", ...] Print["Buckle my shoe"]

#----------------------------------------------------

-- Greg Ewing, Computer Science Dept, +--------------------------------------+ University of Canterbury, | A citizen of NewZealandCorp, a | Christchurch, New Zealand | wholly-owned subsidiary of USA Inc. | greg.ewing at canterbury.ac.nz +--------------------------------------+

More information about the Python-Dev mailing list