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Questions - list-comprehension

Replace items of a longer list with matches from a shorter list

My goal is to compare two lists as follows: Take every item in long_list and compare it for substrings to the entire short_list. If there is a match, add the item from the short_list to new_list. If n...
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päger

python

list

list-comprehension

Votes: 0

Answers: 1

Latest Answer

If you absolutly want to do it with a comprehension list you can use the folowing >>> new_list = [next((y for y in short_list if x.lower() in y.lower()),'NA') for x in long_list] >>>...
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Black Raven

Replace list element with class instance

I have a class that transforms list like [1, 2] into symbols. It take 2 positional arguments that correspond to each of the elements in the list. I am making another function that takes in argument a ...
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zacharie picard

python

list

class

list-comprehension

Votes: 0

Answers: 1

Latest Answer

You are trying to index the list using l, but l is a list element, not an index. Try newlist = [SymbolClass(l[l][0],l[l][1]) if l is not None else l for l in range(len(lst))] By the way, l is a not s...
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Jussi Nurminen

how to change timestamp from lists of lists in python

i have list of lists as [[Timestamp('2022-04-06 11:56:39.951476'), 'passed', '{"ref_price":44849.6333333333,"category":"by category 2","exe_time":"2022...
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Madan

python

list

dataframe

timestamp

list-comprehension

Votes: 0

Answers: 0

More elegant way to create a python dictionary from a map object and list

someList=['this','that','the_other','and_this'] timeFrame='hour' getDatafromFile(some_string,time_frame): do some processing return dataframeObject The end result is a dictionary with a keyed...
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horsehead97

python

list-comprehension

threadpoolexecutor

dictionary-comprehension

Votes: 0

Answers: 2

Latest Answer

You can use dict comprehension syntax: {key: getDatafromFile(key, timeFrame) for key in someList}
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Nechoj

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