列表和集合 / 列表

numbers = [2357111317]
contain5 = 5 in numbers
# contain5 is True

index5 = numbers.index(5)
# index5 is 2

contain10 = 10 in numbers
# contain10 is False

number2 = [19831671]
containNum = number2.count(1)
# containNum is 2

print(f"{contain5 = }")
print(f"{index5 = }")
print(f"{contain10 = }")
print(f"{containNum = }")