Lambda Functions

What is a disadvantage of using lambda functions?

A:

They cannot be used in higher-order functions

B:

They can only contain a single expression

C:

They are less efficient than regular functions

D:

They cannot be assigned to variables

Answer: B

Lambda functions are limited to a single expression, which may be a disadvantage when more complex logic or multiple statements are required.

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In Python, what is the purpose of the filter() function when used with lambda functions?

A:

To apply the lambda function to each element of an iterable

B:

To create a filter object based on the lambda function's condition

C:

To sort the elements of an iterable using the lambda function

D:

To map the lambda function to each element of an iterable

Answer: B

The filter() function is used to create a filter object that includes only the elements from an iterable for which the lambda function returns True.

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Which of the following statements about lambda functions is correct?

A:

Lambda functions can have named parameters

B:

Lambda functions cannot be used in conjunction with higher-order functions

C:

Lambda functions support multiple lines of code

D:

Lambda functions are always more efficient than regular functions

Answer: A

Lambda functions can have named parameters, just like regular functions, allowing for greater flexibility in their usage.

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What happens if a lambda function is assigned to a variable but not called immediately?

A:

It raises a syntax error

B:

It is stored as a reference to the function and can be called later

C:

It automatically executes the function

D:

It requires parentheses to be called later

Answer: B

Assigning a lambda function to a variable allows you to store it as a reference for later use. It doesn't automatically execute when assigned.

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How is the syntax of a lambda function different from a regular function?

A:

Lambda functions use the keyword lambda, regular functions use def

B:

Lambda functions must have a return statement, regular functions may not

C:

Lambda functions can have multiple expressions, regular functions cannot

D:

Lambda functions require parentheses around parameters, regular functions do not

Answer: A

Lambda functions are defined using the lambda keyword, while regular functions are defined using the def keyword.

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Questions for: Lambda Functions