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Explicitly select items from a list or tuple
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list( myBigList[i] for i in [87, 342, 217, 998, 500] )
I compared the answers with python 2.5.2:
19.7 usec: [ myBigList[i] for i in [87, 342, 217, 998, 500] ]
20.6 usec: map(myBigList.__getitem__, (87, 342, 217, 998, 500))
22.7 usec: itemgetter(87, 342, ...
Pandas: drop a level from a multi-level column index?
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321
You can use MultiIndex.droplevel:
>>> cols = pd.MultiIndex.from_tuples([("a", "b"), (...
Function to calculate distance between two coordinates
...ording to Google Maps, the distance between these coordinates (from 59.3293371,13.4877472 to 59.3225525,13.4619422 ) are 2.2 kilometres while the function returns 1.6 kilometres. How can I make this function return the correct distance?
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How to perform element-wise multiplication of two lists?
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287
Use a list comprehension mixed with zip():.
[a*b for a,b in zip(lista,listb)]
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C++ performance challenge: integer to std::string conversion
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#include <string>
const char digit_pairs[201] = {
"00010203040506070809"
"10111213141516171819"
"20212223242526272829"
"30313233343536373839"
"40414243444546474849"
"50515253545556575859"
"60616263646566676869"
"70717273747576777879"
"8081828384858...
How to use pip with Python 3.x alongside Python 2.x
I installed Python 3.x (besides Python 2.x on Ubuntu) and slowly started to pair modules I use in Python 2.x.
10 Answers
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List of lists into numpy array
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205
If your list of lists contains lists with varying number of elements then the answer of Ignaci...
How do you convert a byte array to a hexadecimal string, and vice versa?
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Apache: “AuthType not set!” 500 Error
... the line that says
Require all granted
it's only needed on Apache >=2.4
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How do I forward parameters to other command in bash script?
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245
Use the shift built-in command to "eat" the arguments. Then call the child process and pass it...