Python custom exception

class UnderAge(Exception):
   pass
 
def verify_age(age):
   if int(age) < 18:
       raise UnderAge
   else:
       print('Age: '+str(age))
 
# main program
verify_age(23)  # won't raise exception
verify_age(17)  # will raise exception

Source: journaldev.com

Raising custom exception python

class UnderAge(Exception):
   pass
 
def verify_age(age):
   if int(age) < 18:
       raise UnderAge("You must be at least 18 years old")
   else:
       print('Age: '+str(age))
 
# main program
verify_age(23)  # won't raise exception
verify_age(17)  # will raise exception

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