python try catch

try:
  seq = int(seq)
  if seq < 0:
    print "Error"
except (TypeError, ValueError):
  print "Error"

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except ºóÃæ²»Òª¼ÓÀ¨ºÅ.

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try:
    raise TypeError, "Catch it"
except TypeError, e
    print "catch!"

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raise ¾Í¿ÉÒÔÁË

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Python code:

try:
seq = int(seq)
except TypeError:
print "Error"
if seq < 0:
raise ValNotRight



Python code:

class ValNotRight(Exception):
pass