缥缈映苍穹 - 博客园

Python functools

摘要： # 回忆装饰器 from functools import wraps # 可以改变一个函数的名字, 注释... def wrapper(fn): @wraps(fn) # 把inner的名字改变成原来的func def inner(*args, **kwargs): print("前") ret = fn(*args, **kwargs) ... 阅读全文

posted @ 2018-12-29 17:07 缥缈映苍穹阅读(125) 评论(0) 推荐(0)

摘要： from collections import namedtuple # 类 p = namedtuple("Point", ["x", "y","z"]) # 对象 p1 = p(10, 20,30) print(p1) print(p1.x) print(p1.y) car = namedtuple("Car", ["pai", "color", "pailiang"]) c = ca... 阅读全文

posted @ 2018-12-29 17:07 缥缈映苍穹阅读(133) 评论(0) 推荐(0)

Python 时间

摘要： import time # 时间戳: 从1970-01-01 00:00:00开始计算. 未来存储的时候用是时间戳 print(time.time()) # 格式化时间 print(time.strftime("%Y-%m-%d %H:%M:%S")) # 用来显示的 # 2018-01-02 12:38:56 print(time.strftime("%Y-%m-%d %H:%M:%S ... 阅读全文

posted @ 2018-12-29 17:06 缥缈映苍穹阅读(177) 评论(0) 推荐(0)

Python 栈和队列,双向队列

摘要： # 栈 # 特点: 先进后出 class StackFullException(Exception): pass class StackEmptyException(Exception): pass class Stack: def __init__(self,size): self.size = size self.lst = [] ... 阅读全文

posted @ 2018-12-29 17:05 缥缈映苍穹阅读(193) 评论(0) 推荐(0)

Python Counter

摘要： from collections import Counter print(Counter("宝宝今年特别喜欢王宝强")) # 计数 lst = ["jay","jay","jay","宝宝","宝宝","胡辣汤","上官婉儿","上官婉儿"] c = Counter(lst) print(c.get("宝宝")) 阅读全文

posted @ 2018-12-29 17:04 缥缈映苍穹阅读(86) 评论(0) 推荐(0)

Python 默认值字典

摘要： from collections import defaultdict # 默认值字典 dd = defaultdict(lambda: "胡辣汤") # callable 可调用的, 字典是空的 print(dd["张无忌"]) # 从字典向外拿数据. 字典是空的. key:callable() 这里的[]和get()不是一回事 print(dd.get("宝宝")) print(dd) ... 阅读全文

posted @ 2018-12-29 17:04 缥缈映苍穹阅读(675) 评论(0) 推荐(0)

Python random

摘要： # from xxx import xxxx # from 老男孩 import alex # 导入一个具体的功能 # import 老男孩 import random print(random.randint(10,20)) from random import randint print(randint(10,20)) import random print(random.randin... 阅读全文

posted @ 2018-12-29 17:03 缥缈映苍穹阅读(108) 评论(0) 推荐(0)

Python super

摘要： class Base1: def chi(self): print("我是可怜的Base1") class Base2: def chi(self): print("我是可怜的Base2") class Base3: def chi(self): print("我是可怜的Base3") class Bar(Base1,... 阅读全文

posted @ 2018-12-29 17:03 缥缈映苍穹阅读(121) 评论(0) 推荐(0)

Python MRO_C3

摘要： class A: pass class B(A): pass class C(A): pass class D(B, C): pass class E(C, A): pass class F(D, E): pass class M: pass class N(M): pass class P(E, A... 阅读全文

posted @ 2018-12-29 17:02 缥缈映苍穹阅读(104) 评论(0) 推荐(0)

Python 深度递归

摘要： class A: pass class B(A): pass class C(A): pass class D(B, C): pass class E: pass class F(D, E): pass class G(F, D): pass class I: pass class J(B, C): pass class K... 阅读全文

posted @ 2018-12-29 17:01 缥缈映苍穹阅读(158) 评论(0) 推荐(0)