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Why do we need the “event” keyword while defining events?
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143
Field-like events and public fields of delegate types look similar, but are actually very diffe...
Get environment variable value in Dockerfile
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414
You should use the ARG directive in your Dockerfile which is meant for this purpose.
The A...
How to filter a dictionary according to an arbitrary condition function?
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434
Nowadays, in Python 2.7 and up, you can use a dict comprehension:
{k: v for k, v in points.it...
Difference between break and continue statement
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edited Oct 24 '14 at 17:59
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Efficient evaluation of a function at every cell of a NumPy array
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164
You could just vectorize the function and then apply it directly to a Numpy array each time you ...
Insert a row to pandas dataframe
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149
Just assign row to a particular index, using loc:
df.loc[-1] = [2, 3, 4] # adding a row
df.i...
Transposing a NumPy array
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248
It's working exactly as it's supposed to. The transpose of a 1D array is still a 1D array! (If...
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 access the ith column of a NumPy multidimensional array?
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724
>>> test[:,0]
array([1, 3, 5])
Similarly,
>>> test[1,:]
array([3, 4])
le...
Regular expression for matching HH:MM time format
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Your original regular expression has flaws: it wouldn't match 04:00 for example.
This may work better:
^([0-1]?[0-9]|2[0-3]):[0-5][0-9]$
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