while:
x = 1
while x <= 100:
print(x)
x += 1
for:
numbers = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
for number in numbers:
print(number)
内置函数range:
>>> range(0, 10)
range(0, 10)
>>> list(range(0, 10))
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
遍历就是迭代