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How do you create nested dict in Python?

...he next step creating a dictionary on row_key d[row_key] = {} for idx, col in enumerate(row): d[row_key][idx] = col According to your comment: may be above code is confusing the question. My problem in nutshell: I have 2 files a.csv b.csv, a.csv has 4 columns i j k l, b.cs...
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How much overhead does SSL impose?

...ting a single byte at a time, which is the worst case. Never seen 250x. I did an extensive experiment over the Internet with 1700 data points where the general result was that plaintext sockets were no better than three times as fast as SSL, using programming no more sophisticated than buffering and...
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Why doesn't django's model.save() call full_clean()?

...ul excerpt (IMHO) from the second reference: "Developing an "automatic" validation option which is both simple enough to actually be useful and robust enough to handle all the edge cases is -- if it's even possible -- far more than can be accomplished on the 1.2 timeframe. Hence, for now, Django doe...
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multiprocessing.Pool: When to use apply, apply_async or map?

...gs,**kwargs) is preferred. The multiprocessing.Pool modules tries to provide a similar interface. Pool.apply is like Python apply, except that the function call is performed in a separate process. Pool.apply blocks until the function is completed. Pool.apply_async is also like Python's built-in ...
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Why does running the Flask dev server run itself twice?

... Ah ok. Thanks for the explanation! So its considered normal behaviour? At least good that nothing's wrong with my code.. :) – kramer65 Aug 26 '14 at 11:06 ...
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How do I limit the number of results returned from grep?

... domain updated: [132116.568942] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) [132116.568944] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [132116.568945] cfg80211: (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [132116.568...
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Detect Chrome extension first run / update

...ich was of course a workable solution, but I was so surprised that chrome didn't have something built-in for this! I'm so glad that I have not been let down :) – JMTyler Sep 11 '13 at 0:38 ...
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Memory management in Qt?

...aints imposed by the constructors for other reasons, however; such as in QWidget(QWidget* parent=0), where the parent must be another QWidget, due to e.g. visibility flags and because you’d do some basic layout that way; but for Qt's hierarchy system in general, you are allowed to have any QObject...
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Understanding Canvas and Surface concepts

...refore the whole Surface / Canvas / Bitmap system, which is used in Android. 3 Answers ...
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How to add title to subplots in Matplotlib?

... define dynamic axes(ax) as in Line 1 of code and you can set its title inside a loop. The rows of 2D array is length (len) of axis(ax) Each row has 2 items i.e. It is list within a list (Point No.2) set_title can be used to set title, once the proper axes(ax) or subplot is selected. import matpl...