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Python Dictionary Comprehension
...;> d = {n: n**2 for n in range(5)}
>>> print d
{0: 0, 1: 1, 2: 4, 3: 9, 4: 16}
If you want to set them all to True:
>>> d = {n: True for n in range(5)}
>>> print d
{0: True, 1: True, 2: True, 3: True, 4: True}
What you seem to be asking for is a way to set multiple...
pandas three-way joining multiple dataframes on columns
...
497
Assumed imports:
import pandas as pd
John Galt's answer is basically a reduce operation. I...
Intellij shortcut to convert code to upper or lower case?
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477
Ctrl + Shift + U
In the future try typing: Ctrl + Shift + A and look for any actions you like...
Remove rows with all or some NAs (missing values) in data.frame
...cases(final), ]
gene hsap mmul mmus rnor cfam
2 ENSG00000199674 0 2 2 2 2
6 ENSG00000221312 0 1 2 3 2
na.omit is nicer for just removing all NA's. complete.cases allows partial selection by including only certain columns of the dataframe:
> final[comp...
Remove last item from array
...
548
Use splice(startPosition, deleteCount)
array.splice(-1,1)
...
Pairs from single list
... section.
– Apalala
Jan 7 '11 at 18:40
@Apalala: zip does advance the same iterator twice.
– Joc...
Why is lazy evaluation useful?
...
Vinko Vrsalovic
236k4747 gold badges312312 silver badges359359 bronze badges
answered Nov 5 '08 at 15:07
mipadimipadi
...
How to check for a valid Base64 encoded string
Is there a way in C# to see if a string is Base 64 encoded other than just trying to convert it and see if there is an error? I have code code like this:
...
Rename Pandas DataFrame Index
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243
The rename method takes a dictionary for the index which applies to index values.
You want to r...
Get statistics for each group (such as count, mean, etc) using pandas GroupBy?
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458
On groupby object, the agg function can take a list to apply several aggregation methods at on...