converting str to int in list comprehension [duplicate]

问题

This question already has answers here:

Remove empty strings from a list of strings (13 answers)

Filtering a list of strings based on contents (5 answers)

Closed 2 years ago.

I have a list with years as strings but there are few missing years which are represented as empty strings.

I am trying to convert those strings to integers and skip the values which can't be converted using list comprehension and try and except clause?

birth_years = ['1993','1994', '' ,'1996', '1997', '', '2000', '2002']

I tried this code but it's not working.

try:
    converted_years = [int(year) for year  in birth_years]
except ValueError:
    pass

required output:
converted_years = ['1993','1994','1996', '1997', '2000', '2002']

回答1:

[int(year) for year in birth_years if year.isdigit()]

回答2:

converted_years = [int(year) for year in birth_years if year]

回答3:

converted_years = [int(x) for x in birth_years if x.isdigit()]

来源：https://stackoverflow.com/questions/51745416/converting-str-to-int-in-list-comprehension