Exception Handling

Try-Except Block#

try:
  doSmth()
except:
  print("Error!")

Raising Exceptions#

if x > 0:
  raise RuntimeError("Input cannot be greater than zero.")
else:
  doSmth();

Creating Your Own Exceptions#

class ValueTooLargeError(Error):
   """Raised when the input value is too large"""
   pass

# Main Program
if x > 0:
  raise ValueTooLargeError

Try-Except Block
Raising Exceptions
Creating Your Own Exceptions