Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
150 views
in Technique[技术] by (71.8m points)

python - How to convert list of elements to their default types

for eg I have the List:

old =  ['Savannah', '234Today', '4.5678', '23456','0.2342429']

How can I convert it to a list with elements with the default type

to:

new =  ['Savannah', '234Today', 4.5678, 23456,0.2342429]

The new list will have the elements with their default type be it float, int, long

Any help is Appreciated! Thank you

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

You can use ast.literal_eval and some exception handling:

>>> from ast import literal_eval
>>> lis = ['Savannah', '234Today', '4.5678', '23456','0.2342429']
def solve(x):
    try:
        return literal_eval(x)
    except (ValueError, SyntaxError):
        return x
...     
>>> map(solve, lis)
['Savannah', '234Today', 4.5678, 23456, 0.2342429]

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...