🌐 Mailman 3 September 2011 - 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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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 """

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a quick Q: how to use for loop to read a series of files with .doc end
by lina Oct. 28, 2011

Oct. 28, 2011

Hi, I want to read a bunch of *.doc file in present working directory, how can I use for to read one by one and do further work, sorry, what's the best reference webpage I can use? I googled, lots of distracting info, and I barely can understand how they think. THanks, -- Best Regards, lina

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map one file and print it out following the sequence
by lina Oct. 13, 2011

Oct. 13, 2011

Hi, I have file 1: cur.itp 1 CH3 1 CUR C1 1 0.066 15.0350 2 OA 1 CUR O1 1 -0.183 15.9994 3 C 1 CUR C2 1 0.126 12.0110 4 CR1 1 CUR C3 1 -0.020 12.0110 5 HC 1 CUR H31 1 0.011 1.0080 6 C 1 CUR C7 2 0.137 12.0110 7 OA 1 CUR O2 2 -0.175 15.9994 8 H 1 CUR H22 2 0.038 1.0080 9 CR1 1 CUR C6 3 -0.025 12.0110 10 HC 1 CUR H61 3 0.009 1.0080 11 CR1 1 CUR C5 3 -0.025 12.0110 12 HC 1 CUR H51 3 0.009 1.0080 13 C 1 CUR C4 3 -0.041 12.0110 14 C 1 CUR C8 3 -0.012 13.0190 15 C 1 CUR C9 3 -0.013 13.0190 16 C 1 CUR C10 3 0.304 12.0110 17 OA 1 CUR O6 3 -0.234 15.9994 18 H 1 CUR H62 3 0.028 1.0080 19 C 1 CUR C11 4 0.000 13.0190 20 C 1 CUR C12 5 0.304 12.0110 21 OA 1 CUR O3 5 -0.234 15.9994 22 H 1 CUR H32 5 0.028 1.0080 23 C 1 CUR C13 5 -0.012 13.0190 24 C 1 CUR C14 5 -0.012 13.0190 25 C 1 CUR C15 5 -0.041 12.0110 26 CR1 1 CUR C20 5 -0.026 12.0110 27 HC 1 CUR H20 5 0.009 1.0080 28 CR1 1 CUR C16 5 -0.025 12.0110 29 HC 1 CUR H16 5 0.009 1.0080 30 CR1 1 CUR C17 6 -0.018 12.0110 31 HC 1 CUR H17 6 0.012 1.0080 32 C 1 CUR C18 6 0.140 12.0110 33 OA 1 CUR O5 6 -0.172 15.9994 34 H 1 CUR H52 6 0.038 1.0080 35 C 1 CUR C19 7 0.123 12.0110 36 OA 1 CUR O4 7 -0.187 15.9994 37 CH3 1 CUR C21 7 0.064 15.0350 and file 2: procesed.pdb ATOM 1 H52 CUR 1 33.502 30.958 -9.831 -0.71 -0.23 H ATOM 2 H32 CUR 1 34.440 28.421 -3.916 0.00 0.09 H ATOM 3 H22 CUR 1 31.110 22.839 1.886 -0.18 0.12 H ATOM 4 H51 CUR 1 29.829 27.375 1.674 -0.21 -0.00 H ATOM 5 H31 CUR 1 33.510 26.681 -0.511 -0.27 -0.02 H ATOM 6 H6 CUR 1 29.459 24.909 1.878 -0.23 -0.01 H ATOM 7 H17 CUR 1 35.217 29.440 -7.832 -0.21 0.01 H ATOM 8 H20 CUR 1 30.338 28.778 -6.812 -0.06 -0.01 H ATOM 9 H16 CUR 1 34.487 28.652 -5.564 -0.18 -0.00 H ATOM 10 C21 CUR 1 30.599 28.677 -10.410 -0.06 -0.05 C ATOM 11 O4 CUR 1 30.948 29.625 -9.382 -0.04 0.04 O ATOM 12 C19 CUR 1 31.790 29.357 -8.323 -0.10 -0.00 C ATOM 13 C20 CUR 1 31.394 28.922 -7.039 -0.06 -0.01 C ATOM 14 C15 CUR 1 32.371 28.675 -6.051 -0.08 0.00 C ATOM 15 C16 CUR 1 33.744 28.855 -6.335 -0.18 -0.00 C ATOM 16 C17 CUR 1 34.160 29.295 -7.609 -0.21 0.01 C ATOM 17 C18 CUR 1 33.174 29.543 -8.587 -0.20 0.02 C ATOM 18 C14 CUR 1 31.931 28.137 -4.836 -0.06 0.00 C ATOM 19 C13 CUR 1 31.827 29.048 -3.599 -0.03 -0.01 C ATOM 20 C12 CUR 1 33.154 29.408 -2.909 -0.04 -0.03 C ATOM 21 O3 CUR 1 34.199 28.542 -2.995 0.00 0.09 O ATOM 22 C11 CUR 1 33.102 30.386 -1.736 -0.14 -0.02 C ATOM 23 C10 CUR 1 31.707 30.606 -1.152 -0.30 -0.04 C ATOM 24 O6 CUR 1 31.139 31.683 -1.277 -0.38 0.05 O ATOM 25 C9 CUR 1 31.046 29.377 -0.519 -0.35 -0.04 C ATOM 26 C8 CUR 1 31.923 28.547 0.425 -0.29 0.01 C ATOM 27 C4 CUR 1 31.681 27.171 0.558 -0.27 0.01 C ATOM 28 C3 CUR 1 32.636 26.289 0.009 -0.27 -0.02 C ATOM 29 C2 CUR 1 32.451 24.894 0.139 -0.24 -0.02 C ATOM 30 C7 CUR 1 31.296 24.423 0.823 -0.22 -0.02 C ATOM 31 C6 CUR 1 30.341 25.296 1.368 -0.23 -0.01 C ATOM 32 C5 CUR 1 30.547 26.678 1.242 -0.21 -0.00 C ATOM 33 O1 CUR 1 33.288 23.913 -0.343 -0.69 0.04 O ATOM 34 C1 CUR 1 34.646 24.135 -0.767 -0.21 -0.06 C ATOM 35 O2 CUR 1 31.119 23.072 0.955 -0.18 0.12 O ATOM 36 O5 CUR 1 33.561 30.000 -9.813 -0.71 -0.23 O Now I wish the file 2 filed 3 output as the order of the file 1 field 2, namely will be, ATOM 10 C21 CUR 1 30.599 28.677 -10.410 -0.06 -0.05 C ATOM 11 O4 CUR 1 30.948 29.625 -9.382 -0.04 0.04 O namely rearrange it. I wrote a failed python script, hope someone can give me some advice, #!/bin/python mapping={} for line in open("cur.itp").readlines(): parts=line.strip().split() if len(parts)==8: mapping[parts[4]]=parts[0] origs=open("processedpdb").read().split() print " ".join([mapping[orig] for orig in origs]) the last sentence I even don't know what I am doing. sorry. -- Best Regards, lina

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Mac IDE
by Robert Johansson Oct. 5, 2011

Oct. 5, 2011

Hi, I know that there is a lot to read about different IDEs on the net but I have tried a couple and I'm still not pleased. My demands are not that high, when I'm under Windows I'm happy with IDLE (an interactive shell and debug) but the problem is with Mac (Python >= 2.7 and OS 10.7). IDLE had serious problems and TextWrangler had no interactive shell. There's a lot of other stuff to try and I would be grateful if someone could spare me some time on this. Cheers, Robert

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Tables
by Anna Olofsson Oct. 4, 2011

Oct. 4, 2011

Hi, I'm a beginner at Python and I have tried to read the Python manual, but I still can't figure out how to extract columns from a table and then create a new table by merge these extracted tables together. Best, Anna

4 3

Fw: Issues With Map Reduce
by StevenJ Hennessy Oct. 3, 2011

Oct. 3, 2011

Hello, I am currently struggling with a homework assignment. I need to use Map reduce to create a dictionary of palendromes -> number of palendrome for example: the string "bab bab bab cab cac dad" would output: bab 3 cab 1 dad 1 here is what I have so far def palendrome(string): palendromes = [] for word in string.split(" "): if (word == word[::-1]): palendromes.append(word) return palendromes string = "abc abd bab tab cab tat yay uaefdfdu" print map(lambda x: palendrome(x), ["bab abc dab bab bab dad crap pap pap "]) #returns a list of lists [['bab', 'bab', 'bab', 'dad', 'pap', 'pap', '']] #Here is my attempt so far at the reduce section def p(lists): for list in lists: set_h = set(list) return set_h #with the p function I want to create a set of all palendromes found. Then run a count of the palendroms on the list and make a dict #out of this print reduce(p, [['bab', 'bab', 'bab', 'dad', 'pap', 'pap', '']]) ---------------------- Am I on the right track? Thanks

3 2

guess age programme (please help)
by ADRIAN KELLY Oct. 1, 2011

Oct. 1, 2011

Hi all, can anyone help me with the attached programme. it is fairly basic (like me) i want it to ask the user to guess the age and countdown when making incorrect guesses. it doesn't seem to count the first attempt (run it and see please). i also want to know how to go about setting a condition so that when the guesses = 0, the programme closes or stops etc. any advice would be very grateful (particularly the correct code) i am learning if's and loops so please keep explanations as simple as possible. i really appreciate everyones help adrian

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Input
by Cameron Macleod Oct. 1, 2011

Oct. 1, 2011

Hi, When you type Input("\n\nPress The Enter Key To Exit") it forces you to press the enter key to close the program. Why is it the enter key instead of e.g. the 'esc' key?

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Re: [Tutor] Mac IDE
by Fernando Salamero Sept. 30, 2011

Sept. 30, 2011

Another great IDE is NINJA-IDE, http://www.ninja-ide.org , but they are still searching for somebody who makes an installer. Any volunteer?

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