标签：哪些 compile 进制 copy default __str__ rom attr abc
1. all： 所有条件为真则为True，否则是False
1 >>> all([0,3]) 2 False 3 >>> all([-1,3]) 4 True
2. any：任一条件为真则为True
1 >>> any([0,3]) 2 True 3 >>> any([-1,3]) 4 True 5 >>> any([0]) 6 False 7 >>> any([0,‘‘]) 8 False 9 >>>
3. bin：将数字转换为二进制
1 >>> bin(1) 2 ‘0b1‘ 3 >>> bin(2) 4 ‘0b10‘ 5 >>> bin(4) 6 ‘0b100‘ 7 >>> bin(8) 8 ‘0b1000‘ 9 >>> bin(255) 10 ‘0b11111111
4. bool：判断真假
1 >>> bool([]) 2 False 3 >>> bool([1]) 4 True 5 >>> bool(‘abc‘) 6 True 7 >>> bool(‘‘) 8 False
5. ord和chr
1 >>> chr(29579) 2 ‘王‘ 3 >>> chr(29239) 4 ‘爷‘ 5 >>> ord("王") 6 29579 7 >>> ord("爷") 8 29239
6. compile：将字符串编译成可执行代码
1 >>> code = "for i in range(10):print(i)" 2 >>> code 3 ‘for i in range(10):print(i)‘ 4 >>> compile(code, ‘‘, ‘exec‘) 5 <code object <module> at 0x0000018C686E3ED0, file "", line 1> 6 >>> exec(code) 7 0 8 1 9 2 10 3 11 4 12 5 13 6 14 7 15 8 16 9
7. dir：查询对象有哪些使用方法
1 >>> a = {} 2 >>> dir(a) 3 [‘__class__‘, ‘__contains__‘, ‘__delattr__‘, ‘__delitem__‘, ‘__dir__‘, ‘__doc__‘, ‘__eq__‘, ‘__format__‘, ‘__ge__‘, ‘__getattribute__‘, ‘__getitem__‘, ‘__gt__‘, ‘__hash__‘, ‘__init__‘, ‘__init_subclass__‘, ‘__iter__‘, ‘__le__‘, ‘__len__‘, ‘__lt__‘, ‘__ne__‘, ‘__new__‘, ‘__reduce__‘, ‘__reduce_ex__‘, ‘__repr__‘, ‘__setattr__‘, ‘__setitem__‘, ‘__sizeof__‘, ‘__str__‘, ‘__subclasshook__‘, ‘clear‘, ‘copy‘, ‘fromkeys‘, ‘get‘, ‘items‘, ‘keys‘, ‘pop‘, ‘popitem‘, ‘setdefault‘, ‘update‘, ‘values‘]
8. divmod：地板除
1 >>> divmod(5,2) 2 (2, 1) 3 >>> divmod(5,1) 4 (5, 0) 5 >>> divmod(5,3) 6 (1, 2)
9. filter：过滤，示例结合匿名函数
1 >>> res = filter(lambda n:n>5,range(10)) 2 >>> for i in res: 3 ... print(i) 4 ... 5 6 6 7 7 8 8 9
标签：哪些 compile 进制 copy default __str__ rom attr abc
原文地址：http://www.cnblogs.com/cnwangshijun/p/7366783.html
