This might help. Never used it though.
Johan
Christian Wyglendowski wrote:
> -----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Oliver Maunder
Sent: Wednesday, October 05, 2005 1:13 PM
To: tutor@python.org
Subject: [Tutor] Console output
Does anyone know how I can update a line of console output
without creating a new line?
Hi Oliver,
If you are on a *nix system, check out the "curses" package in the
standard library. I have never used it, but it provides ways to
accomplish what you are after.
HTH,
Christian
http://www.dowski.com
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class progressBar:
def __init__(self, minValue = 0, maxValue = 10, totalWidth=12):
self.progBar = "[]" # This holds the progress bar string
self.min = minValue
self.max = maxValue
self.span = maxValue - minValue
self.width = totalWidth
self.amount = 0 # When amount == max, we are 100% done
self.updateAmount(0) # Build progress bar string
def updateAmount(self, newAmount = 0):
if newAmount < self.min: newAmount = self.min
if newAmount > self.max: newAmount = self.max
self.amount = newAmount
# Figure out the new percent done, round to an integer
diffFromMin = float(self.amount - self.min)
percentDone = (diffFromMin / float(self.span)) * 100.0
percentDone = round(percentDone)
percentDone = int(percentDone)
# Figure out how many hash bars the percentage should be
allFull = self.width - 2
numHashes = (percentDone / 100.0) * allFull
numHashes = int(round(numHashes))
# build a progress bar with hashes and spaces
self.progBar = "[" + '#'*numHashes + ' '*(allFull-numHashes) + "]"
# figure out where to put the percentage, roughly centered
percentPlace = (len(self.progBar) / 2) - len(str(percentDone))
percentString = str(percentDone) + "%"
# slice the percentage into the bar
self.progBar = self.progBar[0:percentPlace] + percentString +
self.progBar[percentPlace+len(percentString):]
def __str__(self):
return str(self.progBar)
==================================================
import time
prog = progressBar(0, 100, 77)
for i in xrange(101):
prog.updateAmount(i)
print prog, "\r",
time.sleep(.05)
==================================================
# Best not to print it every iteration, Terry Carroll, 2004/01/26
# It can be a substantial performance hit to print the bar every iteration, whether it changes or not. At 100 iterations, like Josiah's' example, it changes every iteration, so it won't' matter. But if you have more than a few thousand, it's' worth checking and not printing an unchanged bar:
limit = 1000000
prog = progressBar(0, limit, 77)
oldprog = str(prog)
for i in xrange(limit+1):
prog.updateAmount(i)
if oldprog != str(prog):
print prog, "\r",
oldprog=str(prog)
print
=================================================
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