Python中的异常类型

Posted on 2009-03-31 20:06 Herbert 阅读(3241) 评论(1)  编辑 收藏 引用 所属分类: Python

1、NameError:尝试访问一个未申明的变量
>>>  v
NameError: name 'v' is not defined

2、ZeroDivisionError:除数为0
>>> v = 1/0
ZeroDivisionError: int division or modulo by zero

3、SyntaxError:语法错误
>>> int int
SyntaxError: invalid syntax (<pyshell#14>, line 1)

4、IndexError:索引超出范围
>>> List = [2]
>>> List[3]
Traceback (most recent call last):
  File "<pyshell#18>", line 1, in <module>
    List[3]
IndexError: list index out of range

5、KeyError:字典关键字不存在
>>> Dic = {'1':'yes', '2':'no'}
>>> Dic['3']
Traceback (most recent call last):
  File "<pyshell#20>", line 1, in <module>
    Dic['3']
KeyError: '3'

6、IOError:输入输出错误
>>> f = open('abc')
IOError: [Errno 2] No such file or directory: 'abc'

7、AttributeError:访问未知对象属性
>>> class Worker:
 def Work():
  print("I am working")

>>> w = Worker()
>>> w.a
Traceback (most recent call last):
  File "<pyshell#51>", line 1, in <module>
    w.a
AttributeError: 'Worker' object has no attribute 'a'

8、ValueError:数值错误
>>> int('d')

Traceback (most recent call last):
  File "<pyshell#54>", line 1, in <module>
    int('d')
ValueError: invalid literal for int() with base 10: 'd'

9、TypeError:类型错误
>>> iStr = '22'
>>> iVal = 22
>>> obj = iStr + iVal;
Traceback (most recent call last):
  File "<pyshell#68>", line 1, in <module>
    obj = iStr + iVal;
TypeError: Can't convert 'int' object to str implicitly

10、AssertionError:断言错误
>>> assert 1 != 1
Traceback (most recent call last):
  File "<pyshell#70>", line 1, in <module>
    assert 1 != 1
AssertionError

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# re: Python中的异常类型  回复  更多评论   

2009-05-24 19:10 by 新人
你好!我在学习python,希望找个师傅,能不能带带我,我没什么基础,我迷上了编程···我QQ215612488 希望你能教教我!谢谢!

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