10.3.4 处理多个异常的except 语句:
我们还可以在一个except 子句里处理多个异常,
except 语句在处理多个异常时要求异常被放在一个元组里:
def safe_float(obj):
try:
retval = float(obj)
except (ValueError,TypeError):
retval = 'argument must be a number or numeric string'
return retval
class fun1(object):
def __init__(self):
pass
b=fun1()
print b
print type(b)
a=safe_float(b)
print a
C:\Python27\python.exe C:/Users/TLCB/PycharmProjects/untitled/mycompany/ddd/a20.py
<__main__.fun1 object at 0x022A7310>
<class '__main__.fun1'>
argument must be a number or numeric string
def safe_float(obj):
try:
retval = float(obj)
except (ValueError,TypeError):
retval = 'argument must be a number or numeric string'
return retval
class fun1(object):
def __init__(self):
pass
b=fun1()
print b
print type(b)
a=safe_float('abc')
print a
C:\Python27\python.exe C:/Users/TLCB/PycharmProjects/untitled/mycompany/ddd/a20.py
<__main__.fun1 object at 0x022A7310>
<class '__main__.fun1'>
argument must be a number or numeric string
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