Python: finally clause

‘finally’ clause is used to perform clean up operations, ‘finally’ block always executes before leaving try statement (whether exception occurred or not, doesn’t matter). A typical try block looks like below.

try:
 statements
except ZeroDivisionError:
 statements
else:
 statements
finally:
 statements

test.py

def div(a, b):
 try:
  result = a/b
 except ZeroDivisionError:
  print("b should not be zero")
 else:
  print("Result : ", result)
 finally:
  print("executing finally clause")

>>> import test
>>> test.div(10, 2)
Result :  5.0
executing finally clause
>>> 
>>> test.div(5, 0)
b should not be zero
executing finally clause

In real world applications, finally clause is used to close the resources like files, network socket connections etc.,

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