🌐 Mailman 3 January 2013 - 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!

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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? ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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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

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using ranges with argparse()
by Kurt Lieber July 20, 2013

July 20, 2013

Hi -- brand new to python, but trying to write a simple script that takes command line arguments. One of the arguments needs to test if a value is a) an integer and b) within a stated range. I currently have: parser.add_argument("-f", "--floor", default=6000, help="floor is the minimum amount of bonus points.",type=int, choices=range(5995, 6001)) This works, but when the user enters an out of bounds value, the help message is unfriendly: % ./bonus.py -f 10000 usage: bonus.py [-h] [-f {5995,5996,5997,5998,5999,6000}] MAM-bonus.py: error: argument -f/--floor: invalid choice: 10000 (choose from 5995, 5996, 5997, 5998, 5999, 6000) The problem is my default range is actually 0,10000 -- I changed it above for brevity's sake. So in the real world, it floods the screen to the point where it's unreadable. I can suppress the whole thing with argparse.SUPPRESS, but then I'm left with no help message at all. Is there a way to suppress the "(choose from 1,2,3,etc.)" part of the help message? Or a cleaner/different way altogether to accomplish the same thing? thanks.

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Set Reply-To field to Tutor@python.org
by Oscar Benjamin April 10, 2013

April 10, 2013

I have both sent and received messages on this list that went off-list by mistake. It's an easy mistake to make that you use reply instead of reply-all and then the message goes just to one person instead of the whole list. This problem is not unique to the python-tutor. I see it happening often on other mailing lists (often it's noticeable by the fact that someone forwards an off-list message back to the list which can sometimes break the threading of email software). One particular list that I receive has recently made an administrative change so that, from now on, all emails have the "Reply-To" header set to the list address. This means that the default behaviour when replying to a message is that the reply goes to the list. I think that this is the right thing to do by default since replying off-list is much less common and more likely to be something that you are consciously aware of when you do it. The change seems to have gone down well on the other list so I wondered: could it be done for this list as well? Oscar

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First Python Test
by Dustin Guerri Feb. 1, 2013

Feb. 1, 2013

Hi there, I'm trying to create a plain text file called "hello.py" with the following text : print('hello world') raw_input('Press any key to continue') I'd then like to run this program with Python Launcher on a Mac. I'd lke to use Xcode as my text editor. Once I have Xcode open, which template should I use to input the text ? Thanks, *Dustin Guerri* Mobile : (+ 34) 625 857 967 dustinguerri(a)gmail.com | www.vimeo.com/dustinguerri/pop [image: LinkedIn]<http://www.linkedin.com/profile/view?id=16395850&trk=tab_pro> Contact me: [image: Google Talk] dustinguerri [image: Skype] dustinguerri Get a signature like this. <http://r1.wisestamp.com/r/landing?promo=20&dest=http%3A%2F%2Fwww.wisestamp.…> CLICK HERE.<http://r1.wisestamp.com/r/landing?promo=20&dest=http%3A%2F%2Fwww.wisestamp.…>

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operator order
by heathen Feb. 1, 2013

Feb. 1, 2013

why is this: >>> d = 2 >>> d *= 3 + 4 >>> d 14 not this: >>> d = 2 >>> d = d * 3 + 4 >>> d 10

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HELP-Regarding python
by Gayathri S Jan. 30, 2013

Jan. 30, 2013

Hi All....! I don't know how to read text file in python. If the data values are stored in a text file format, for example(1,30,60,90,120...200) means what i would do for reading it in python. could you just explain it. Thanks....! Keep Smiling.........[?] Regards........ Gayu....[?]

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changing unicode to ascii
by Benjamin Fishbein Jan. 30, 2013

Jan. 30, 2013

I was trying to write text to a file and got the following error: UnicodeEncodeError: 'ascii' codec can't encode character u'\xa0' in position 5495: ordinal not in range(128) I tried several things I found online, such as: text.encode("ascii", "ignore") which gave me the same error and text.replace("\xa0", "") again, UnicodeEncodeError I tried text.decode("ascii", "ignore") and got the same result. I'm using Python 2.7, so there's some special technique for this version? I think the utf-8 data is unnecessary; I can strip it if I can't convert it to ascii. Of course, I can't figure out how to strip it either. Any help is much appreciated. Thanks, Ben

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automate add-to-cart with python
by Benjamin Fishbein Jan. 30, 2013

Jan. 30, 2013

Hello, I'm trying to automate putting a series of items into my cart. Here's the html for the add-to-cart button on the website: <a class="PDP_button_addToCart2" href="http://cart.half.ebay.com/ws/eBayISAPI.dll?HalfAddItemToCart&ap=additem…">Add to cart</a></td> Using the cookielib and urllib2 module, I did: a= text.find("href")+6 b = text.find('"', a) url = text[a:b] new_text = opener.open(url).read() It goes to the page that shows my cart, but there are zero items--the item is not added to the cart. I'm guessing this has something to do with: class="PDP_button_addToCart2" I'm not sure how to have Python click the button. In general, despite scouring the Internet, I haven't been able to figure out how to get Python to cause javascripts I find in the html to be run. Any help would be greatly appreciated. Thanks, Ben

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