Hello, I have an odd kind of Heisenbug in what looks like a pretty simple program. The program is a progress bar code I got at the Python Cookbook:
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/168639 (including the code below) If you uncomment the one print statement I added in the progressBar class, you get the error: File "test_progress2.py", line 19 diffFromMin = float(self.amount - self.min) ^ SyntaxError: invalid syntax yet, without the print statement, it works fine. what am I overlooking here? thanks, bb #------------------------------------------------------------------------ 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 # print "hello" #<-------------- uncomment line to break # 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) if __name__ == "__main__": import time prog = progressBar(0, 100, 77) for i in xrange(101): prog.updateAmount(i) print prog, "\r", time.sleep(.05) -- http://mail.python.org/mailman/listinfo/python-list
