How to propagate an exception ?

[Shagshag]

Hello,

How do you propagate an exception ? Is there a way to raise the
previous exception raised after doing something ?

Here what i would like to do :

try:
    some_parsing_with_minidom(from_a_line)
except SAXParseException: # (1)
    # there are trouble in my file such as & instead of &
    # and other things which prevent correct parsing but 
    # i don't know where and what cause my trouble
    print index_of_line, line
    raise SAXParseException #<- should be the one i intercept in (1)