6.8 Try, Except

Question 1

What does “Try, Except” statement does?

Answer 1

This statement controls how the program proceeds when the error occurs

Question 2

What is the syntax for “Try, Except” statement?

Answer 2

try:
do something
except:
do something else when error occurs

Question 3

Write a script using the “Try, Except” statement

Answer 3

try:
   answer = 12/0
   print (answer)
except:
   print("An error occurred")

It will print - An error occurred as you cannot divide a number by Zero

Question 4

What would you do if you want to display more specific error messages to your users, depending on the error?

Answer 4

One can specify the error type after the except keyword

Question 5

Write a script and result using the multiple levels of Except

Answer 5

Question 6

When is ValueError raised?

Answer 6

When a function receives an argument that has the right type, but an inappropriate value like when asking for a number, a letter is entered.

Question 7

When is ZeroDivisionError raised?

Answer 7

When the program tries to divide by Zero

Question 8

When is IOError raised?

Answer 8

It is raised when an I/O operation fails for an I/O-related reason, e.g.,”file not found”.

Question 9

When is importError raised?

Answer 9

It is raised when an import statement fails to find the module definition.

Question 10

When is IndexError raised?

Answer 10

When a sequence(e.g. string, list, tuple) index is out of range

Question 11

When is KeyError raised?

Answer 11

When a dictionary key isn’t found.

Question 12

When is NameError raised?

Answer 12

When a local or global name is not found

Question 13

TypeError

Answer 13

When an operation or function is applied to an object of inqppropriate type

Question 14

What keyword is used for the pre-defined error messages?

Answer 14

“as”

Question 15

Give an example to display the default ValueError message.

Answer 15

except ValueError as e:

print(e)