On 12/30/2009 7:47 AM, Grigor Kolev wrote:
Hi.
Can someone explain me where is my mistake.
-----------------------------------------------
class Error(Exception):
def printer(self , value ):
self.value = value
print self.value
def oops():
raise Error
def domoed():
try:
oops()
except Error:
Test = Error()
print 'Error: ', Test.printer('Test')
else:
print 'no error'
if __name__ == "__main__":
domoed()
------------------------------------------------------
Result is:
Error: Test
None
From where come it None
Test.printer(...) returns "None" and when you:
print 'Error: ', Test.printer('Test')
turns to:
print 'Error: ', None
And rather your approach seems "unconventional". You shouldn't create a
new Exception object in the except-clause unless you want to raise that
new exception.
class Error(Exception):
def __init__(self, value):
self.value = value
def printer(self, value):
print self.value
def oops():
raise Error('some error')
def domoed():
try:
oops()
except Error, e:
e.printer()
else:
print 'no error'
if __name__ == "__main__":
domoed()
_______________________________________________
Tutor maillist - [email protected]
To unsubscribe or change subscription options:
http://mail.python.org/mailman/listinfo/tutor
