大约有 42,000 项符合查询结果(耗时:0.0506秒) [XML]
Creating functions in a loop
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edited Mar 10 '19 at 19:30
Aran-Fey
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answered...
Remove an item from a dictionary when its key is unknown
...not do what you want:
>>> some_dict = {1: "Hello", 2: "Goodbye", 3: "You say yes", 4: "I say no"}
>>> value_to_remove = "You say yes"
>>> some_dict = {key: value for key, value in some_dict.items() if value is not value_to_remove}
>>> some_dict
{1: 'Hello', 2: 'G...
PostgreSQL query to return results as a comma separated list
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edited Apr 30 at 7:02
Kaleem Ullah
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What's the point of 'meta viewport user-scalable=no' in the Google Maps API
I'm using the Google Maps JavaScript API V3 and the official examples always have you include this meta tag:
4 Answers
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How to extract numbers from a string in Python?
...to extract only positive integers, try the following:
>>> str = "h3110 23 cat 444.4 rabbit 11 2 dog"
>>> [int(s) for s in str.split() if s.isdigit()]
[23, 11, 2]
I would argue that this is better than the regex example because you don't need another module and it's more readable b...
How to change border color of textarea on :focus
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answered Apr 22 '13 at 21:03
adriftadrift
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Returning JSON from PHP to JavaScript?
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Kent FredricKent Fredric
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How to find where a method is defined at runtime?
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edited Jul 16 '18 at 3:34
XtraSimplicity
4,12011 gold badge2323 silver badges2626 bronze badges
ans...
Detect if a NumPy array contains at least one non-numeric value?
...ing and will work regardless of shape.
numpy.isnan(myarray).any()
Edit: 30x faster:
import timeit
s = 'import numpy;a = numpy.arange(10000.).reshape((100,100));a[10,10]=numpy.nan'
ms = [
'numpy.isnan(a).any()',
'any(numpy.isnan(x) for x in a.flatten())']
for m in ms:
print " %.2f s"...
Bash empty array expansion with `set -u`
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answered May 1 at 22:43
dimo414dimo414
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