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  • getting Ceil() of Decimal in python?

    - by Gunjan
    Is there a way to get the ceil of a high precision Decimal in python? >>> import decimal; >>> decimal.Decimal(800000000000000000001)/100000000000000000000 Decimal('8.00000000000000000001') >>> math.ceil(decimal.Decimal(800000000000000000001)/100000000000000000000) 8.0 math rounds the value and returns non precise value

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  • The confusion on python encoding

    - by zhangzhong
    I retrieved the data encoded in big5 from database,and I want to send the data as email of html content, the code is like this: html += """<tr><td>""" html += """unicode(rs[0], 'big5')""" # rs[0] is data encoded in big5 I run the script, but the error raised: UnicodeDecodeError: 'ascii' codec can't decode byte...... However, I tried the code in interactive python command line, there are no errors raised, could you give me the clue?

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  • running python from an android app

    - by Stacia
    Hi everyone, I am trying to run a python script through an application I've written. I found some pages which say that this piece of code is doing it, but I can't figure it out. http://code.google.com/p/android-scripting/source/browse/android/AndroidScriptingEnvironment/src/com/google/ase/locale/LocaleReceiver.java Can someone explain what is going on and how I can edit that to run an arbitrary script file in my project directory?

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  • Should Python 2.6 on OS X deal with multiple easy-install.pth files in $PYTHONPATH?

    - by ahd
    I am running ipython from sage and also am using some packages that aren't in sage (lxml, argparse) which are installed in my home directory. I have therefore ended up with a $PYTHONPATH of $HOME/sage/local/lib/python:$HOME/lib/python Python is reading and processing the first easy-install.pth it finds ($HOME/sage/local/lib/python/site-packages/easy-install.pth) but not the second, so eggs installed in $HOME/lib/python aren't added to the path. On reading the off-the-shelf site.py, I cannot for the life of me see why it's doing this. Can someone enlighten me? Or advise how to nudge Python into reading both easy-install.pth files? Consolidating both into one .pth file is a viable workaround for now, so this question is mostly for curiosity value.

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  • Python logger dynamic filename

    - by sharjeel
    I want to configure my Python logger in such a way so that each instance of logger should log in a file having the same name as the name of the logger itself. e.g.: log_hm = logging.getLogger('healthmonitor') log_hm.info("Testing Log") # Should log to /some/path/healthmonitor.log log_sc = logging.getLogger('scripts') log_sc.debug("Testing Scripts") # Should log to /some/path/scripts.log log_cr = logging.getLogger('cron') log_cr.info("Testing cron") # Should log to /some/path/cron.log I want to keep it generic and dont want to hardcode all kind of logger names I can have. Is that possible?

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  • Python SUDS - problem with sending a message encoded not in UTF-8

    - by bartekb
    I need to send a SOAP message (with Python SUDS) with strings encoded in 'iso-8859-2'. Does anybody know how to do it? SUDS raises the following exception when I invoke a method on a client with parameters encoded in 'iso-8859-2': File "/home/bartek/myenv/lib/python2.5/site-packages/suds/sax/text.py", line 43, in __new__ result = super(Text, cls).__new__(cls, *args, **kwargs) UnicodeDecodeError: 'ascii' codec can't decode byte 0xc5 in position 10: ordinal not in range(128)

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  • C++ like iterators in python?

    - by uberjumper
    This might be a really dumb question, however i've looked around online, etc. And have not seen a solid answer. What i was wondering, is there a simple way to do something like this? lines = open('something.txt', 'r').readlines() for line in lines: if line == '!': # force iteration forward twice line.next().next() <etc> Is there an easy way to do that in python?

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  • Python: try statement single line

    - by Brant
    Is there a way in python to turn a try/except into a single line? something like... b = 'some variable' a = c | b #try statement goes here Where b is a declared variable and c is not... so c would throw an error and a would become b...

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  • Downloading file with Python results in only 4.1kB

    - by Vlad Ogay
    I'm using simple code: import urllib2 response = urllib2.urlopen("http://www.mysite.com/getfile/4355") output = open('myfile.zip','wb') output.write(response.read()) output.close() The web-server is IIS + ASP.NET MVC 4 It returns FileResult wrapping a zip-file with "application/octet-stream" content-type. The problem is that downloaded zip file is broken - only 4.1kB size, where it must be 24kB. When I type the url adress in web-browser directly - it downloads and opens fine. Could you please, suggest, what's wrong with my Python code?

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  • Python sock.listen(...)

    - by Ian
    All the examples I've seen of sock.listen(5) in the python documentation suggest I should set the max backlog number to be 5. This is causing a problem for my app since I'm expecting some very high volume (many concurrent connections). I set it to 200 and haven't seen any problems on my system, but was wondering how high I can set it before it causes problems.. Anyone know?

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  • How to write a large number of nested records in JSON with Python

    - by jamesmcm
    I want to produce a JSON file, containing some initial parameters and then records of data like this: { "measurement" : 15000, "imi" : 0.5, "times" : 30, "recalibrate" : false, { "colorlist" : [234, 431, 134] "speclist" : [0.34, 0.42, 0.45, 0.34, 0.78] } { "colorlist" : [214, 451, 114] "speclist" : [0.44, 0.32, 0.45, 0.37, 0.53] } ... } How can this be achieved using the Python json module? The data records cannot be added by hand as there are very many.

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  • Memory efficient int-int dict in Python

    - by Bolo
    Hi, I need a memory efficient int-int dict in Python that would support the following operations in O(log n) time: d[k] = v # replace if present v = d[k] # None or a negative number if not present I need to hold ~250M pairs, so it really has to be tight. Do you happen to know a suitable implementation (Python 2.7)? EDIT Removed impossible requirement and other nonsense. Thanks, Craig and Kylotan! To rephrase. Here's a trivial int-int dictionary with 1M pairs: >>> import random, sys >>> from guppy import hpy >>> h = hpy() >>> h.setrelheap() >>> d = {} >>> for _ in xrange(1000000): ... d[random.randint(0, sys.maxint)] = random.randint(0, sys.maxint) ... >>> h.heap() Partition of a set of 1999530 objects. Total size = 49161112 bytes. Index Count % Size % Cumulative % Kind (class / dict of class) 0 1 0 25165960 51 25165960 51 dict (no owner) 1 1999521 100 23994252 49 49160212 100 int On average, a pair of integers uses 49 bytes. Here's an array of 2M integers: >>> import array, random, sys >>> from guppy import hpy >>> h = hpy() >>> h.setrelheap() >>> a = array.array('i') >>> for _ in xrange(2000000): ... a.append(random.randint(0, sys.maxint)) ... >>> h.heap() Partition of a set of 14 objects. Total size = 8001108 bytes. Index Count % Size % Cumulative % Kind (class / dict of class) 0 1 7 8000028 100 8000028 100 array.array On average, a pair of integers uses 8 bytes. I accept that 8 bytes/pair in a dictionary is rather hard to achieve in general. Rephrased question: is there a memory-efficient implementation of int-int dictionary that uses considerably less than 49 bytes/pair?

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  • Gnuplot python with 2 list

    - by devil night
    I've a python script that gives me 2 lists and another who is the reference(the time). How can I create a graphic with the representation of my first list by the time. And same question for the second list. I need them on the same graphic. list1 [12, 15, 17, 19] list2 [34, 78, 54, 67] list3 [10, 20, 30, 40] (time in minutes) How can I create a graphic in png format with these lists? Thanks

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  • Intercept method calls in Python

    - by eaigner
    Hi. I'm implementing a RESTful web service in python and would like to add some QOS logging functionality by intercepting function calls and logging their execution time and so on. Basically i thought of a class from which all other services can inherit, that automatically overrides the default method implementations and wraps them in a logger function. What's the best way to achieve this?

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