python基础之循环

1.while True

luck_num = 19
while True:
    guess_num = int(input("pls input your guess:"))
    if guess_num == luck_num:
        print("binggo")
        break
    elif guess_num > luck_num:
        print("smaller")
    else:
        print("bigger")

2.while...else

luck_num = 19
guess_num = 0
while guess_num != luck_num:
    guess_num = int(input("pls input your guess:"))
    if guess_num > luck_num:
        print("smaller")
    elif guess_num < luck_num:
        print("bigger")
else:
    print("bingo")

3.for range()

for i in range(3):
    print(i)

4.continue and break

>>> for i in range(10):
...     if i < 5:
...         continue
...     print(i)
... 
5
6
7
8
9

>>> for i in range(10):
...     if i == 5:
...         break
...     print(i)
... 
0
1
2
3
4