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...十六进制方式，才能清楚地看到，“春节”被转成了“B4 BA BD DA”。
我们知道，“春”和“节”的GB2312编码（我的操作系统“Windows XP”中文版的默认编码）分别是“B4 BA”和“BD DA”。因此，IE实际上就是将查询字符串，以GB231...
SecItemAdd and SecItemCopyMatching returns error code -34018 (errSecMissingEntitlement)
...vice from Xcode I would try to access the keychain but fail due to error -34018. This doesn't match any of the documented keychain error codes and can't be consistently reproduced. (happens maybe 30% of the time, and it's not clear to me why it happens). What makes debugging this problem very diffic...
Java: Calling a super method which calls an overridden method
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edited Oct 2 '14 at 11:45
answered Jan 4 '11 at 16:11
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Sorting arrays in NumPy by column
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147
@steve's answer is actually the most elegant way of doing it.
For the "correct" way see the or...
How to install XNA game studio on Visual Studio 2012?
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4 Answers
4
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python pandas: Remove duplicates by columns A, keeping the row with the highest value in column B
...drop_duplicates(subset='A', keep="last")
Out[10]:
A B
1 1 20
3 2 40
4 3 10
You can do also something like:
In [12]: df.groupby('A', group_keys=False).apply(lambda x: x.loc[x.B.idxmax()])
Out[12]:
A B
A
1 1 20
2 2 40
3 3 10
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Split array into chunks
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694
The array.slice method can extract a slice from the beginning, middle, or end of an array for wh...
How do I get PyLint to recognize numpy members?
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edited Sep 14 '16 at 22:49
answered Sep 14 '16 at 22:43
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Random Gaussian Variables
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edited Jan 30 '17 at 14:58
answered Oct 20 '08 at 14:16
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Compiling with cython and mingw produces gcc: error: unrecognized command line option '-mno-cygwin'
I'm trying to compile a python extension with cython in win 7 64-bit using mingw (64-bit).
I'm working with Python 2.6 (Active Python 2.6.6) and with the adequate distutils.cfg file (setting mingw as the compiler)
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