Python 循环与定义函数

break

for i in range(10):
    if i == 2:
        break
    print i

0
1

continue

for i in range(10):
    if i == 2:
        continue
    print i

0
1
3
4
5
6
7
8
9

函数

def square_sum(a,b):
    c = a**2 + b**2
    return c

v = square_sum(2,3)
print v

计算a的平方加b的平方。

a = 1


def change_integer(a):
    a = a + 1
    return a


print change_integer(a)
print a

2
1

段落之间留两行，显得结构清晰。

b = [1,2,3]


def change_list(b):
    for i in range(len(b)):
        b[i] = b[i] + 1
    return b


print change_list(b)
print b

[2, 3, 4]
[2, 3, 4]