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[英]Dynamic Classes in Kivy… I'm still lacking Comprehension.. Doesn't work as I'm Expecting
[英]List Comprehension.. am I crazy?
我有一个电话号码列表
phone_numbers = [000-000-0000, 000-000-0000, 000-000-0000]
for number in phone_numbers:
x = list(filter(str.isdigit, number.strip()))
t = "".join(x)
给了我我想要的结果0000000000
是否可以为此目的使用列表理解,或者我完全关闭?
[list(filter(str.isdigit, x.strip())) for x in phone_numbers]
是的,您可以使用列表理解。
["".join(filter(str.isdigit, number.strip())) for number in phone_numbers]
这里有一些解决方案,
import re
phone_numbers = ["000-000-0000", "000-000-0000", "000-000-0000"]
>>> ["".join(re.findall("\d+", p)) for p in phone_numbers]
['0000000000', '0000000000', '0000000000']
或者
>>> ["".join(x for x in p if x.isdigit()) for p in phone_numbers]
['0000000000', '0000000000', '0000000000']
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