更新时间:2023-01-30 17:09:15
最简单和最安全的方法是使用 ast.literal_eval()
:
import ast
ab = [1,2,'a','b','c']#a list
strab = str列表的表示
strab
=> [1,2,'a','b','c']
lst = ast.literal_eval(strab)#将字符串表示转换回列表
lst $ b b => [1,2,'a','b','c']
ab == lst#健全检查:他们是否相等?
=>真的#当然是他们!
注意,调用 eval()
也可以,但它不安全,你不应该使用它:
eval(strab)
=> [1,2,'a','b','c']
I have a list:
ab = [1, 2, a, b, c]
I did:
strab = str(ab).
So strab
is now a string.
I want to cast that string back into a list.
How can I do that?
The easiest and safest way would be to use ast.literal_eval()
:
import ast
ab = [1, 2, 'a', 'b', 'c'] # a list
strab = str(ab) # the string representation of a list
strab
=> "[1, 2, 'a', 'b', 'c']"
lst = ast.literal_eval(strab) # convert string representation back to list
lst
=> [1, 2, 'a', 'b', 'c']
ab == lst # sanity check: are they equal?
=> True # of course they are!
Notice that calling eval()
also works, but it's not safe and you should not use it:
eval(strab)
=> [1, 2, 'a', 'b', 'c']