Exception Handling

Consider the following Python code:

try:
    x = int("42")
except ValueError:
    x = "Invalid conversion"
else:
    x += 1
finally:
    x *= 2

What will be the value of "x" after the execution of this code?

A:

42

B:

"42"

C:

"Invalid conversion"

D:

86

Answer: D

The try block successfully converts the string "42" to an integer. The else block increments the value of "x" by 1, and the finally block multiplies "x" by 2.

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Which of the following statements is true about the raise statement?

A:

It is used to terminate the program

B:

It can only raise built-in exceptions

C:

It is used to catch exceptions

D:

It is used to explicitly raise an exception

Answer: D

The raise statement is used to explicitly raise an exception in Python.

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Consider the following Python code:

try:
    value = int("abc")
except ValueError:
    result = "Invalid conversion"
finally:
    result += " - Finally block executed"

What will be the value of "result" after the execution of this code?

A:

"Invalid conversion"

B:

"Invalid conversion - Finally block executed"

C:

" - Finally block executed"

D:

Raises an exception

Answer: B

The finally block is executed regardless of whether an exception occurs or not. It appends " - Finally block executed" to the "result" string.

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In Python, what is the purpose of the except block without specifying an exception type?

A:

It catches all exceptions

B:

It is a syntax error

C:

It only catches specific exceptions

D:

It is not allowed

Answer: A

An except block without specifying an exception type catches all exceptions, which can be useful for handling unexpected errors.

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Which built-in Python function is used to raise an exception?

A:

raise()

B:

throw()

C:

except()

D:

error()

Answer: A

The raise() function is used to explicitly raise an exception in Python.

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Questions for: Exception Handling