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Get the cartesian product of a series of lists?
...
itertools.product
Available from Python 2.6.
import itertools
somelists = [
[1, 2, 3],
['a', 'b'],
[4, 5]
]
for element in itertools.product(*somelists):
print(element)
Which is the same as,
for element in itertools.product([1, 2, 3], ['a', 'b'], ...
Which is the first integer that an IEEE 754 float is incapable of representing exactly?
...
2 Answers
2
Active
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How to flatten only some dimensions of a numpy array
...
129
Take a look at numpy.reshape .
>>> arr = numpy.zeros((50,100,25))
>>> arr.sh...
How to manually deprecate members
...
273
You can use the Available tag, for example :
@available(*, deprecated)
func myFunc() {
/...
How to open multiple pull requests on GitHub
...
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edited Oct 27 '19 at 13:17
ahmednabil88
11.8k99 gold badges3939 silver badges7878 bronze badges
...
Creating a new column based on if-elif-else condition
... passing in the axis=1 option:
In [1]: df['C'] = df.apply(f, axis=1)
In [2]: df
Out[2]:
A B C
a 2 2 0
b 3 1 1
c 1 3 -1
Of course, this is not vectorized so performance may not be as good when scaled to a large number of records. Still, I think it is much more readable. Especially c...
how to ignore namespaces with XPath
... Dirk VollmarDirk Vollmar
157k5151 gold badges240240 silver badges300300 bronze badges
9
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Find XOR of all numbers in a given range
...
152
This is a pretty clever solution -- it exploits the fact that there is a pattern of results in t...
Is there any way to use a numeric type as an object key?
... a string via the toString method.
> var foo = {}
undefined
> foo[23213] = 'swag'
'swag'
> foo
{ '23213': 'swag' }
> typeof(Object.keys(foo)[0])
'string'
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