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How to remove an element from a list by index
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18 Answers
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What is the pythonic way to detect the last element in a 'for' loop?
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Most of the times it is easier (and cheaper) to make the first iteration the special case inst...
Finding the index of an item in a list
..., "bar", "baz"] and an item in the list "bar" , how do I get its index ( 1 ) in Python?
31 Answers
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Mapping two integers to one, in a unique and deterministic way
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Select multiple columns in data.table by their numeric indices
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For versions of data.table >= 1.9.8, the following all just work:
library(data.table)
dt &...
how to check the dtype of a column in python pandas
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You can access the data-type of a column with dtype:
for y in agg.columns:
if(agg[y].dtyp...
`elif` in list comprehension conditionals
...essions were designed exactly for this sort of use-case:
>>> l = [1, 2, 3, 4, 5]
>>> ['yes' if v == 1 else 'no' if v == 2 else 'idle' for v in l]
['yes', 'no', 'idle', 'idle', 'idle']
Hope this helps :-)
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