Question

Python怎么将数字数组转为字符数组

例如[1,2,3]转化为['1','2','3']

Answer 1

用map函数

文档

map(function, iterable, ...)

Apply function to every item of iterable and return a list of the results. If additional iterable arguments are passed, functionmust take that many arguments and is applied to the items from all iterables in parallel. If one iterable is shorter than another it is assumed to be extended with None items. If function is None, the identity function is assumed; if there are multiple arguments, map() returns a list consisting of tuples containing the corresponding items from all iterables (a kind of transpose operation). The iterable arguments may be a sequence or any iterable object; the result is always a list.

a = [1,2,3,4]
s = map(str,a)

Answer 2

可以用python的list comprehension

[str(x) for x in [1,2,3]]

Answer 3

a=[1,2,3]
b=[str(item) for item in a]