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Question
Explain catching exceptions using try and except block.
Solution
An exception is said to be caught when a code that is designed to handle a particular exception is executed. Exceptions, if any, are caught in the try block and handled in the except block.
While writing or debugging a program, a user might doubt an exception to occur in a particular part of the code. Such suspicious lines of codes are put inside a try block. Every try block is followed by an except block. The appropriate code to handle each of the possible exceptions (in the code inside the try block) are written inside the except clause.
While executing the program, if an exception is encountered, further execution of the code inside the try block is stopped and the control is transferred to the except block.
print ("Practicing for try block")
try:
numerator=50
denom=int(input("Enter the denominator"))
quotient=(numerator/denom)
print ("Division performed successfully")
except ZeroDivisionError:
print ("Denominator as ZERO…. not allowed")
print(“OUTSIDE try..except block”)APPEARS IN
RELATED QUESTIONS
How many except statements can a try-except block have?
When will the else part of try-except-else be executed?
Can one block of except statements handle multiple exceptions?
Which of the following blocks lets you test a block of code for errors?
Which of the following is true for Exceptions:
- Exceptions disrupt normal flow of the program
- It is common for exceptions to show up before the program is executed
- Runtime errors are known as Exceptions
- Exception is a Python object that represents an error
What is not true for exception handling?
In exception handling, what keeps track of exact position where error has occurred?
While executing the program, if an exception is encountered in try block then execution of the code inside the try block is stopped and:
The else part of try-except-else executes:
Define the following:
Exception Handling
Define the following:
Throwing an exception
Define the following:
Catching an exception
You have learnt how to use math module in Class XI. Write a code where you use the wrong number of arguments for a method (say sqrt() or pow()). Use the exception handling process to catch the ValueError exception.
Predict the output of the Python code given below:
def Diff(N1,N2):
if N1>N2:
return N1-N2
else:
return N2-N1
NUM= [10,23,14,54,32]
for CNT in range (4,0,-1):
A=NUM[CNT]
B=NUM[CNT-1]
print(Diff(A,B),'#', end=' ')“In a Python program, if a break statement is given in a nested loop, it terminates the execution of all loops in one go.”
