python异常触发及自定义异常类
作者:互联网
python程序运行中,可由程序抛出异常。
异常触发:使用raise命令抛出异常,即可使用异常基类Exception,也可使用自定义异常类(继承Exception类)。
class Point: def __init__(self, x, y): self.x = x self.y = y # Define a class to raise Line errors class LineError(Exception): #继承自基类Exception def __init__(self,ErrorInfo): self.errorinfo=ErrorInfo def __str__(self): return self.errorinfo class Line: def __init__(self, point1, point2): self.point1 = point1 self.point2 = point2 if point1.x==point2.x and point1.y==point2.y: raise LineError("Cannot create line") line = Line(Point(1, 2), Point(1, 2))
标签:__,Exception,自定义,python,self,point1,point2,异常,class 来源: https://www.cnblogs.com/imhuanxi/p/11298980.html