如何在序列python中查找某个值

value = 10
my_list = [1, 2, 3, 4, 5]

if value in my_list:
    print("值存在于列表中")
else:
    print("值不存在于列表中")

value = 10
my_list = [1, 2, 3, 4, 5]

index = my_list.index(value)
print("值的索引位置为：", index)

value = 10
my_list = [1, 2, 3, 4, 5]

for index, item in enumerate(my_list):
    if item == value:
        print("值的索引位置为：", index)
        break

def find_value(value, sequence):
    for index, item in enumerate(sequence):
        if item == value:
            return index
    return -1

value = 10
my_list = [1, 2, 3, 4, 5]

index = find_value(value, my_list)
if index != -1:
    print("值的索引位置为：", index)
else:
    print("值不存在于列表中")