🌐 Mailman 3 October 2012 - Tutor - python.org

Wave module
by Alex Krycek Feb. 12, 2015

Feb. 12, 2015

Hello, I'm trying to join two .wav files with the wave module. But when I try to use wave.open(filename, "rb") I receive the following error: Traceback (most recent call last): File "<stdin>", line 1, in <module> File "F:\PortablePython1.0\lib\wave.py", line 483, in open return Wave_read(f) File "F:\PortablePython1.0\lib\wave.py", line 162, in __init__ self.initfp(f) File "F:\PortablePython1.0\lib\wave.py", line 143, in initfp self._read_fmt_chunk(chunk) File "F:\PortablePython1.0\lib\wave.py", line 264, in _read_fmt_chunk raise Error, 'unknown format: %r' % (wFormatTag,) wave.Error: unknown format: 85 I read somewhere that there are various wave formats, only some supported by Python. Is this true? If so, is there any way I can convert my wave files into a supported kind? Thanks!

3 2

getUncPath(mappedDrive)
by Albert-Jan Roskam Jan. 31, 2014

Jan. 31, 2014

Hi, Is there a function that takes a file path with a mapped drive (z:\blah) and returns the associated UNC path (\\server\share\ding\dang\dong\blah)? I looked in os.path, but it doesn't seem to have this. The link below seems to be a solution (code in the bottom of the page), but I can't install win32com.client in the office :-( Is there any built-in function? http://stackoverflow.com/questions/2244767/python-check-network-map Thanks! Regards, Albert-Jan ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ All right, but apart from the sanitation, the medicine, education, wine, public order, irrigation, roads, a fresh water system, and public health, what have the Romans ever done for us? ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

4 10

How to unpack python-dateutil-2.0.tar.gz
by Richard D. Moores Sept. 5, 2013

Sept. 5, 2013

Python 3.2.3 64 bit MS Windows 7 Home Premium 64-bit SP1 I see python-dateutil recommended here from time to time, so I thought I'd try it out. I downloaded python-dateutil-2.1.tar.gz from http://pypi.python.org/pypi/python-dateutil but have forgotten how to unpack a .tar.gz file. Please remind me. Thanks, Dick Moores

7 20

unicode help
by Marilyn Davis Nov. 14, 2012

Nov. 14, 2012

Hi, I'm still on Python 2.6 and I'm trying to work some unicode handling. I've spent some hours on this snippet of code, trying to follow PEP 0263, since the error tells me to see it. I've tried other docs too and I am still clueless. The code works, except for the comment at the end. I would be very grateful for some help. #!/usr/bin/env python '''Unicode handling for 2.6. ''' class Currency(float): def __str__(self): value = self.__class__.symbol + float.__str__(self) return value class Yen(Currency): symbol = unichr(165) class Pound(Currency): symbol = unichr(163) def main(): y = Yen(100) print unicode(y) p = Pound(100) print unicode(p) main() """ ¥100.0 £100.0 """

5 12

Question
by Amin Memar Nov. 10, 2012

Nov. 10, 2012

Hi there! How can I use wxpython on python 3.3.0? thanks Best Regards. Amin

8 9

why different result from two similar ways
by Frank Pontius Nov. 6, 2012

Nov. 6, 2012

Hello, I have code that works. Then tried to move some of it into function IncrementAndRebuildInput, then result changes, I no longer have same result as when code in function was inline - why? (Function version way below) Inline version: (this correctly adds 1 to all numbers in text string, and prints it out with incremented #s): def IsNum(string): # print "IsNum string", string for char in string: #checks string groupings to be all nums if not char.isdigit(): # print "false" return False # print "true" return True def main(): text = raw_input("Type something: ") print if text: print text else: text = "I got 432 when I counted, but Jim got 433 which is a lot for only 6 cats, or were there 12 cats?" print text #string input SplitText = text.split() #makes a list from string input # print SplitText # print "Did I print LIST?" for index, element in enumerate(SplitText): if IsNum(element): #looks@every list element, checks for # num = int(element) + 1 #if #, increments it # print num # print "Bkpt8" SplitText[index] = str(num) else: pass # print "bkpt9" # NewString = " ".join(SplitText) print "bkpt10" print print SplitText print print " ".join(SplitText) print print "END" main() OUTPUT::: >>> >>> Type something: I got 432 when I counted, but Jim got 433 which is a lot for only 6 cats, or were there 12 cats? bkpt10 ['I', 'got', '433', 'when', 'I', 'counted,', 'but', 'Jim', 'got', '434', 'which', 'is', 'a', 'lot', 'for', 'only', '7', 'cats,', 'or', 'were', 'there', '13', 'cats?'] I got 433 when I counted, but Jim got 434 which is a lot for only 7 cats, or were there 13 cats? END >>> Function version way below: (This version does not produce the same output (w/numbers incremented by 1) def IsNum(string): # print "IsNum string", string for char in string: #checks string groupings to be all nums if not char.isdigit(): # print "false" return False # print "true" return True def IncrementAndRebuildInput(text): newtext = text.split() #makes a list from string input print newtext # print "Did I print LIST?" for index, element in enumerate(newtext): if IsNum(element): #looks@every list element, checks for # num = int(element) + 1 #if #, increments it print num # print "Bkpt8" newtext[index] = str(num) print newtext print "NOWHERE" else: pass # print "bkpt9" print newtext # contains new list w/#'s incremented by 1 print "Point6" return newtext def main(): text = raw_input("Type something: ") print if text: print text else: text = "I got 432 when I counted, but Jim got 433 which is a lot for only 6 cats, or were there 12 cats?" print text #string input IncrementAndRebuildInput(text) # print "bkpt10" print print text # ********** Placing previous inline code into function changes result - what am I doing wrong? ********** print "Point7" print "".join(text) print print "END" main() OUTPUT::: >>> >>> Type something: I got 432 when I counted, but Jim got 433 which is a lot for only 6 cats, or were there 12 cats? ['I', 'got', '432', 'when', 'I', 'counted,', 'but', 'Jim', 'got', '433', 'which', 'is', 'a', 'lot', 'for', 'only', '6', 'cats,', 'or', 'were', 'there', '12', 'cats?'] 433 ['I', 'got', '433', 'when', 'I', 'counted,', 'but', 'Jim', 'got', '433', 'which', 'is', 'a', 'lot', 'for', 'only', '6', 'cats,', 'or', 'were', 'there', '12', 'cats?'] NOWHERE 434 ['I', 'got', '433', 'when', 'I', 'counted,', 'but', 'Jim', 'got', '434', 'which', 'is', 'a', 'lot', 'for', 'only', '6', 'cats,', 'or', 'were', 'there', '12', 'cats?'] NOWHERE 7 ['I', 'got', '433', 'when', 'I', 'counted,', 'but', 'Jim', 'got', '434', 'which', 'is', 'a', 'lot', 'for', 'only', '7', 'cats,', 'or', 'were', 'there', '12', 'cats?'] NOWHERE 13 ['I', 'got', '433', 'when', 'I', 'counted,', 'but', 'Jim', 'got', '434', 'which', 'is', 'a', 'lot', 'for', 'only', '7', 'cats,', 'or', 'were', 'there', '13', 'cats?'] NOWHERE ['I', 'got', '433', 'when', 'I', 'counted,', 'but', 'Jim', 'got', '434', 'which', 'is', 'a', 'lot', 'for', 'only', '7', 'cats,', 'or', 'were', 'there', '13', 'cats?'] Point6 I got 432 when I counted, but Jim got 433 which is a lot for only 6 cats, or were there 12 cats? Point7 I got 432 when I counted, but Jim got 433 which is a lot for only 6 cats, or were there 12 cats? END >>> >>>

4 4

Help with class example
by Frank Pontius Nov. 6, 2012

Nov. 6, 2012

Hello, I'm taking a beginners course on Python. Have class example which is to be used in H/W, which I can't get to work. Thus I figure the example is wrong. But I need this to get H/W done. Using 'import random' and random.randrange in function, returning #. import random def RandomNumberGen (): if random.randrange(0, 2) == 0: X return "tails" return "heads" Simple enough, but running in my Python 2.7.3 IDLE - it will not even run, and give syntax (red char box) error at the X above. Frank

4 7

help on dic creation
by Brayden Zhao Nov. 6, 2012

Nov. 6, 2012

hello! I am doing my homework now and I am kinda stuck. Could any of you help me out? Here is the homework problem: fieldict(filename) reads a file in DOT format and returns a dictionary with the DOT CMPLID, converted to an integer, as the key, and a tuple as the corresponding value for that key. The format of the tuple is: (manufacturer, date, crash, city, state) where these tuple items have the following types: manufacturer -- this comes from the MFR_NAME field in the DOT format date -- this comes from the FAILDATE field in the DOT format, but converted to a Python datetime.date object crash -- this comes from the CRASH field in the DOT format, but converted to a Python bool type (True for a crash) city -- comes from the CITY field in the DOT format state -- comes from the STATE field in the DOT format should return: fieldict("DOT500.txt")[82] ('FORD MOTOR COMPANY', datetime.date(1995, 1, 1), False, 'MARBLE HEAD', 'MA') and here are parts of the data: 1 958164 TOYOTA MOTOR CORPORATION TOYOTA LAND CRUISER 1994 19941223 N 0 0 SERVICE BRAKES, HYDRAULIC:ANTILOCK ARNOLD CA JT3DJ81W8R0 19950103 19950103 ABS SYSTEM FAILURE, AT 20MPH. TT EVOQ V 2 958156 TOYOTA MOTOR CORPORATION TOYOTA PASEO 1994 Y 19941226 N 0 0 PARKING BRAKE:CONVENTIONAL SAN JOSE CA JT2EL45U5R0 19950103 19950103 1 PARKED ON FLAT SURFACE EMERGENCY BRAKING ENGAGED VEHICLE ROLLED REARWARD. TT EVOQ V 3 958124 TOYOTA MOTOR CORPORATION TOYOTA COROLLA 1994 Y 19941128 N 0 0 AIR BAGS:FRONTAL PHOENIX AZ 19950103 19950103 UPON FRONTAL COLLISION, AIR BAG FAILED TO DEPLOY. VEHICLE CLASSIFIED AS TOTALED. PLEASE DESCRIBE DETAILS. TT EVOQ V 4 958122 NISSAN NORTH AMERICA, INC. NISSAN MAXIMA 1994 19950103 N 0 0 SUSPENSION TUCSON AZ JN1HJ01F4RT 19950103 19950103 THE STRUT WAS BAD THERE IS A NOISE ON THE PASSENGER SIDE DOOR AND THE ENGINE LIGHT MALFUNCTION. TT EVOQ V 5 958122 NISSAN NORTH AMERICA, INC. NISSAN MAXIMA 1994 19950103 N 0 0 ENGINE AND ENGINE COOLING:ENGINE TUCSON AZ JN1HJ01F4RT 19950103 19950103 THE STRUT WAS BAD THERE IS A NOISE ON THE PASSENGER SIDE DOOR AND THE ENGINE LIGHT MALFUNCTION. TT EVOQ V Here is my code and I dont know why my code is only reading the 500th line of the file. Thanks for your help! import datetime def boolean(S): if S=="Y": return True return False def fieldict(filename): D={} with open(filename) as FileObject: for lines in FileObject: linelist=lines.split('\t') Key=linelist[0] ValCity=(linelist[12]).strip() ValState=linelist[13] ValOne=linelist[2] ValTwo=linelist[6] ValThree=boolean(linelist[7]) D={Key:(ValOne, ValTwo, ValThree, ValCity,ValState)} return D print fieldict("DOT500.txt")

5 6

Help with OOP!
by Pete Nov. 6, 2012

Nov. 6, 2012

I'm taking this class on python at UCSC. They said this list could help. I don't' understand OOP and I'm having a hard time understanding the "scope" and why the def inside class are not like function -plus I can't get my c-brain around the implicit typing. It looks like the interpreter does not want to return a tuple. why? I don't' know if anybody can fix this, or offer a better solution to this problem. The code and assignment are attached. Pete

3 2

Obtaining result from a sendline
by Dave Wilder Oct. 31, 2012

Oct. 31, 2012

Okay, file this under RTFM, but even after research, I cannot figure out the answer to this simple question. When I do an ssh in python (version 2.7.3) to a device, I am trying to capture the output of the command. However, all I get back is a numerical value. I am looking to get the actual output from the "ls /var/tmp" command below. This is probably readily available info, but I am just not searching on the python sites correctly. e.g. (Pdb) ssh = sshClient.pxssh() (Pdb) ssh.login(server=ip_addr, username=user, password=pswd) True (Pdb) str = ssh.sendline('ls /var/tmp') (Pdb) str 12 (Pdb)

5 5