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• Are there any libraries to allow Python or Ruby to get info from SVN?

  - by Mike Trpcic

  I'm looking for plugins that will allow my codebase to interact with, browse, and poll an SVN server for information about a repository. Trac can do this, but I was hoping there was an easy-to-use library available to accomplish the task, rather than trolling through the Trac codebase. Googling for this returns mostly vague results about storing your code in and SVN repository, which is far from what I'm looking for.

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• Python. How do you set the image attributes?

  - by manny

  I'm using PIL. I tries using : img.info = {'Buyer':'Text','Copyright':'Text2'} This is not working. Is there an alternate way to do it?

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• How would I merged nested dictionaries in a list in python?

  - by Kevin

  for example if i had the result [{'Germany': {"Luge - Men's Singles": 'Gold'}}, {'Germany': {"Luge - Men's Singles": 'Silver'}}, {'Italy': {"Luge - Men's Singles": 'Bronze'}}] [{'Germany': {"Luge - Women's Singles": 'Gold'}}, {'Austria': {"Luge - Women's Singles": 'Silver'}}, {'Germany': {"Luge - Women's Singles": 'Bronze'}}] [{'Austria': {'Luge - Doubles': 'Gold'}}, {'Latvia': {'Luge - Doubles': 'Silver'}}, {'Germany': {'Luge - Doubles': 'Bronze'}}] how would I sort this so that all of the events germany and so on had won could be under one single title. i.e germany would be germany:Luge - Men's Singles: Gold, Silver, Luge - Women's Singles: Gold, Bronze, Luge - Doubles: Bronze. thanks for any help

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• How can I convert data encoded in WE8MSWIN1252 to utf8 for use in Python scripts?

  - by James Dean

  This data comes from an Oracle database and is extracted to flatfiles in encoding 'WE8MSWIN1252'. I want to parse the data and do some analysis. I want to see the text fields but do not need to publish the results to any other system so if some characters do not get converted perfectly I do not have a problem with that. I just do not want my parsing to fail with a decode error which is what I get if I use: inputFile = codecs.open( dataFileName, "r", "utf-8'")

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• How can I dispatch Firefox or Google Chrome with Python?

  - by Shady

  How can I do this with Firefox or Google Chrome? ie = win32com.client.Dispatch('InternetExplorer.Application') ie.visible = 1 ie.navigate('http://google.com') Is there a way to do it? ps: I need to use the ReadyState with it... for example while (ie.ReadyState != 4):, or in other words, I need some command that wait until the page loads completely until do the next command, that's why I need the dispatch, that currently work very good with IE

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• What is the fastest way to scale and display an image in Python?

  - by Knut Eldhuset

  I am required to display a two dimensional numpy.array of int16 at 20fps or so. Using Matplotlib's imshow chokes on anything above 10fps. There obviously are some issues with scaling and interpolation. I should add that the dimensions of the array are not known, but will probably be around thirty by four hundred. These are data from a sensor that are supposed to have a real-time display, so the data has to be re-sampled on the fly.

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• how to read specific number of floats from file in python?

  - by sahel

  I am reading a text file from the web. The file starts with some header lines containing the number of data points, followed the actual vertices (3 coordinates each). The file looks like: # comment HEADER TEXT POINTS 6 float 1.1 2.2 3.3 4.4 5.5 6.6 7.7 8.8 9.9 1.1 2.2 3.3 4.4 5.5 6.6 7.7 8.8 9.9 POLYGONS the line starting with the word POINTS contains the number of vertices (in this case we have 3 vertices per line, but that could change) This is how I am reading it right now: ur=urlopen("http://.../file.dat") j=0 contents = [] while 1: line = ur.readline() if not line: break else: line=line.lower() if 'points' in line : myline=line.strip() word=myline.split() node_number=int(word[1]) node_type=word[2] while 'polygons' not in line : line = ur.readline() line=line.lower() myline=line.split() i=0 while(i<len(myline)): contents[j]=float(myline[i]) i=i+1 j=j+1 How can I read a specified number of floats instead of reading line by line as strings and converting to floating numbers? Instead of ur.readline() I want to read the specified number of elements in the file Any suggestion is welcome..

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• Anyone use Pyjamas (pyjs) python to javascript compiler (like GWT..)

  - by mike

  Has any one used this? I don't have a large background in Javascript and this lib looks like it may speed things along. www.pyjs.org

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• python: how to jump to a particular line in a huge text file?

  - by photographer

  Are there any alternatives to the code below: startFromLine = 141978 # or whatever line I need to jump to urlsfile = open(filename, "rb", 0) linesCounter = 1 for line in urlsfile: if linesCounter > startFromLine: DoSomethingWithThisLine(line) linesCounter += 1 if I'm processing a huge text file (~15MB) with lines of unknown but different length, and need to jump to a particular line which number I know in advance? I feel bad by processing them one by one when I know I could ignore at least first half of the file. Looking for more elegant solution if there is any.

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• Trouble with this Python newbie exercise. Using Lists and finding if two adjacent elements are the s

  - by Sergio Tapia

  Here's what I got: # D. Given a list of numbers, return a list where # all adjacent == elements have been reduced to a single element, # so [1, 2, 2, 3] returns [1, 2, 3]. You may create a new list or # modify the passed in list. def remove_adjacent(nums): for number in nums: numberHolder = number # +++your code here+++ return I'm kind of stuck here. What can I do?

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• It's possible make an OCR in Python to check words...

  - by Shady

  in opened applications? I want to automate firefox in some web page and I don't have a way to "know" if the page already load completely or if it still loading... I was thinking about making an OCR to check the status bar... it's difficult ? For example, when the word DONE appears at the status bar, the program continues to the next command...

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• How do you composite an image onto another image with PIL in Python?

  - by Sebastian

  I need to take an image and place it onto a new, generated white background in order for it to be converted into a downloadable desktop wallpaper. So the process would go: 1) Generate new, all white image with 1440x900 dimensions 2) Place existing image on top, centered 3) Save as single image In PIL, I see the ImageDraw object, but nothing indicates it can draw existing image data onto another image. Suggestions or links anyone can recommend?

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• Python: Number of rows affected by cursor.execute("SELECT ...)

  - by Tie-fighter

  How can I access the number of rows affected by: cursor.execute("SELECT COUNT(*) from result where server_state='2' AND name LIKE '"+digest+"_"+charset+"_%'")

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• How do I insert data from a Python dictionary to MySQL?

  - by NJTechie

  I manipulated some data from MySQL and the resulting dictionary "data" (print data) displays something like this : {'1': ['1', 'K', abc, 'xyz', None, None, datetime.date(2009, 6, 18)], '2': ['2', 'K', efg, 'xyz', None, None, None, None], '3': ['3', 'K', ijk, 'xyz', None, None, None, datetime.date(2010, 2, 5, 16, 31, 2)]} How do I create a table and insert these values in a MySQL table? In other words, how do I dump them to MySQL or CSV? Not sure how to deal with datetime.date and None values. Any help is appreciated.

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• Python: saving objects and using pickle. Error using pickle.dump

  - by Peterstone

  Hello I have an Error and I don´t the reason: >>> class Fruits:pass ... >>> banana = Fruits() >>> banana.color = 'yellow' >>> banana.value = 30 >>> import pickle >>> filehandler = open("Fruits.obj",'w') >>> pickle.dump(banana,filehandler) Traceback (most recent call last): File "<stdin>", line 1, in <module> File "C:\Python31\lib\pickle.py", line 1354, in dump Pickler(file, protocol, fix_imports=fix_imports).dump(obj) TypeError: must be str, not bytes >>> I don´t know how to solve this error because I don´t understand it. Thank you so much.

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• How do I do an "OR" for my python regex?

  - by alex

  re.compile("abc") I would like to do "abc" OR "xyz".

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• Is there a good library for accessing HBase from Python?

  - by Wojtek

  I spent some time looking around, but couldn't find THE library. Jython is an option, but is there something that could be used in a more pythonesque (simpler) way?

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• PIP: how do I install a python package into a different directory?

  - by Monika Sulik

  I know the obvious answer is to use virtualenv and virtualenvwrapper, but for various reasons I can't/don't want to do that. So how do I modify this command: pip install package_name to make pip install the package somewhere other than the default site-packages?

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• Python: Why "is" keyword act different behavior when there is dot in the string?

  - by S.Mark

  >>> x = "test" >>> x is "test" True >>> x = "test.test" >>> x is "test.test" False Can someone give me some hints why its like that?

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• Python - Why use anything other than uuid4() for unique strings?

  - by orokusaki

  I see quit a few implementations of unique string generation for things like uploaded image names, session IDs, et al, and many of them employ the usage of hashes like SHA1, or others. I'm not questioning the legitimacy of using custom methods like this, but rather just the reason. If I want a unique string, I just say this: >>> import uuid >>> uuid.uuid4() 07033084-5cfd-4812-90a4-e4d24ffb6e3d And I'm done with it. I wasn't very trusting before I read up on uuid, so I did this: >>> import uuid >>> s = set() >>> for i in range(5000000): # That's 5 million! >>> s.add(uuid.uuid4()) ... ... >>> len(s) 5000000 Not one repeater (I didn't expect one considering the odds are like 1.108e+50, but it's comforting to see it in action). You could even half the odds by just making your string by combining 2 uuid4()s. So, with that said, why do people spend time on random() and other stuff for unique strings, etc? Is there an important security issue or other regarding uuid?

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• How to delete avery reference of an object in Python?

  - by Juanjo Conti

  Supose you have something like: x = "something" b = x l = [b] How can you delete the object only having one reference, say a? del a won't do the tric; the object is still reachable from b, for example.

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• How do I list all classes of a given type in a python file?

  - by Hobhouse

  I use django, and have a lengthy models.py file. class Foo(models.Model): name = models.CharField() class Bar(models.Model): name = models.CharField() class Fab(models.Model): name = models.CharField() Is there a way to make a list of all the classes in the file which are an instance of (models.Model)?

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• How to get the list of price offers on an item from Amazon with python-amazon-product-api item_looku

  - by miernik

  I am trying to write a function to get a list of offers (their prices) for an item based on the ASIN: def price_offers(asin): from amazonproduct import API, ResultPaginator, AWSError from config import AWS_KEY, SECRET_KEY api = API(AWS_KEY, SECRET_KEY, 'de') str_asin = str(asin) node = api.item_lookup(id=str_asin, ResponseGroup='Offers', Condition='All', MerchantId='All') for a in node: print a.Offer.OfferListing.Price.FormattedPrice I am reading http://docs.amazonwebservices.com/AWSECommerceService/latest/DG/index.html?ItemLookup.html and trying to make this work, but all the time it just says: Failure instance: Traceback: <type 'exceptions.AttributeError'>: no such child: {http://webservices.amazon.com/AWSECommerceService/2009-10-01}Offer

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• What's the standard config file name and extension in Python?

  - by froadie

  I'm creating a config file to hold configuration/properties settings for my project that frequently change, such as file paths. What's the standard name/extension for such a file? (e.g. in Java I've used config.xml, in VB.NET I've used App.config...)

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• How I can get rid of None values in dictionary? Python

  - by Vojtech R.

  Something like: for (a,b) in kwargs.iteritems(): if not b : del kwargs[a] This code raise exception because changing of dictionary when itering... I discover only non pretty solution with another dictionary: res ={} res.update((a,b) for a,b in kwargs.iteritems() if b is not None) Thanks

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