python - 查找列表中包含的字符的位置

Question

如果我得到这个变量

operator = ["&", "/", "->", "<->", "X", "I"]
expression = "p&q->rXq"

我怎样才能返回"&" 和"X" 在`operator 中的位置？我需要这样的输出:

1:0, 3:2, 6:4
#1 for "&", 3 for "->", 6 for "X" inside expression variable.
#0 for "&", 2 for "->", 4 for "X" inside operator List.

Answer 1

operator = ["&", "/", "->", "<->", "X", "I"]
expression = "p&q->rXq"
print(operator.index("<->"))

这将显示输出:

3

这是你想要的吗？