type()
type(int) type(3)
type(123)==type(456)
import types
type("abc") == types.StringType
所有类型本身的类型就是TypeType,例:
type(int)==types.TypeType
isinstance("a",(str,unicode))
dir("a")返回一个包含字符串的list
len("a")等价于"a".__len__()
hasattr(obj,"x")#有x属性么?
getattr(obj,"x")#获取x属性,如果没有,会抛异常
getattr(obj,"x",19)#如果没有x属性值,就返回19这个默认值
setattr(obj,"y",19)#等价于obj.y = 19
has