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(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!
请注意,调用eval()也有效,但是这不安全并且你不应该使用它:
eval(strab)
=> [1, 2, 'a', 'b', 'c']