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exception handling in python using Try block

#exception handling in python
def sum_fun():
  try:
    #should contain normals operations / statements
    1/0
  except :
    #this part will be execute, if there is an error in try part.
    print "Oops!!! Invalid"
  else:
     #if try doesn't contain any errors this will be executed.
     print 'No error'
  finally:
     #This will be executed always - regardless of whether there is error in try part or not.
     print "Let's go home "

#calling the function.
sum_fun()