Try,except,finally?

#1

can u plz tell me what is use of try,except,finally and how & where we exactly use these

#2

hey @Ashu1318 ,
these three form a trio to complete some task together.
lets assume that you have some code that takes input from a keyboard , and perform something .
In this code you have snippet as such , whether you get an input from the keyboard or not , it will work and it has to work also to get your task done without any problem.
So what we do is like
try :
code here that will read input from keyboard
except :
By chance you received an error due to which you didn't get any input and hence to not stop the programm functioning you wrote some code here
finally:
now here the code comes that have to be run always to complete the functioning of the programm

In this way all these three work altogether,
i hope this helped you understand it a bit.

#3

okay now i got it ,also can u plz tell me how to pass a list or tuple in function argument by refrence

#4

most times i have found that we just the update the list we are passing , and do not return anything and keep the name same over whole code , in this way it updates that particular list only like a reference.
for more ,
have a look here https://stackoverflow.com/questions/48363057/how-to-pass-a-list-by-reference

#5

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