Finally statement is used after try-except or loop to execute a certain input.....try:
#statements which could generate
#exception
except:
#solution of generated exception
finally:
#block of code which is going to
#execute in any situation
Because if we are in a function and use return statement , the end print becomes invalidated as function has returned a vale....
Example:-
def func1():
try:
l = [1, 5, 6, 7]
i = int(input("Enter the index: ")) # takig an integer input
print(l[i])
return 1
except:
print("Some error occurred")
return 0
print('i am always executed')
x = func1()
in above function, 0 to 3 is given as input(as index of the list is 4), it will return indexed value & 1 and if any if anything other than integer is given, some error occured will be printed.
But the last print statement (i am always executed) will not be printed in any case....
0 # if integer between 0 to 3 is given
some error occued.
1 # if integer is not given
so if we need to print certain statement at any condition, we have to use finally statement...
def func1():
try:
l = [1, 5, 6, 7]
i = int(input("Enter the index: "))
print(l[i])
return 1
except:
print("Some error occurred")
return 0
finally:
print("I am always executeṇd")
x = func1()
Output:-
0
i am always executed # if integer between 0 to 3 is given
some eror occured
1
i am always executed # if integer is not given