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functools:对callable对象的高位函数和操作(持续更新ing...)
2022-06-28 14:42:00 【诸神缄默不语】
functools官方文档:functools — Higher-order functions and operations on callable objects — Python 3.10.5 documentation
functools是对已有的函数(callable对象)的进行操作,生成新的函数(callable对象)。本文介绍functools的函数和对象。
持续更新。
最近更新时间:2022.6.28
最早更新时间:2022.6.28
文章目录
1. partial
partial对象的属性是函数func、位置参数、关键词参数。一般用于固定函数的某些参数,传入其他参数。如固定int(x,base)函数中的base入参(该函数的目标是将base进制的x转换为int格式的整数对象):
from functools import partial
basetwo = partial(int, base=2)
basetwo.__doc__ = 'Convert base 2 string to an int.'
print(basetwo('10010'))
输出:18
参考资料:
- python中偏函数functools.partial 的使用_万里鹏程转瞬至的博客-CSDN博客_functools.partial( 本文中介绍了functools相比重复定义新函数的优越性,以及介绍了位置参数和关键词参数的区别和引入方式。
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