偏函数

Posted 2020-07-20 rain_1 ACM风雨历程

t = int(‘123445‘)
print(t)
t = int(‘123‘, 4)
print(t)
#23

t = int(‘123‘, base = 8)
print(t) 
#83

t = int(‘12‘, 16)
print(t)
#18

def int2(x, base = 8):
    return int(x, base)
t = int2(‘12‘)
print(t)

import functools
int2 = functools.partial(int, base = 2) #这里固定了int的参数base
t = int2(‘1111‘)
print(t)
#15
#上面代码相当于
kw = {‘base‘ : 2}
t = int(‘1000‘, **kw)
print(t)
#8

max2 = functools.partial(max, 10)

t = max2(1, 3, 5, 6) #实际上会把10作为*args的一部分自动加到左边，也就相当于max(10, 1, 3, 5, 6)
print(t)
#10