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Python Programming - Lambda Functions

Exercise : Lambda Functions - General Questions
  • Lambda Functions - General Questions
31.
What is the significance of the "lambda" keyword in Python lambda functions?
It stands for "list and map data."
It denotes the creation of anonymous functions.
It signifies "logical and."
It indicates "length" of a function.
Answer: Option
Explanation:
The "lambda" keyword is used to create anonymous functions in Python.
32.
In Python, what is the primary difference between a lambda function and a regular function?
Lambda functions cannot take parameters.
Regular functions cannot be used as arguments in higher-order functions.
Lambda functions are defined with the "def" keyword.
Lambda functions are concise and do not require a formal definition.
Answer: Option
Explanation:
Lambda functions are often used for short, specific tasks due to their concise syntax and lack of a formal definition.
33.
What is the purpose of the functools.partial() function in relation to lambda functions?
To create a partial application of a lambda function.
To create a filter object based on the lambda function's condition.
To sort the elements of an iterable using the lambda function.
To apply the lambda function to each element of an iterable.
Answer: Option
Explanation:
functools.partial() is used to create a partial application of a function, including lambda functions, by fixing certain arguments.
34.
How is a lambda function different from a regular function?
Lambda functions can have multiple expressions.
Regular functions are always more memory-efficient.
Lambda functions can have named parameters.
Regular functions cannot be used as arguments in higher-order functions.
Answer: Option
Explanation:
Lambda functions are limited to a single expression, making them concise for short tasks.
35.
What does the following lambda function accomplish? 
lambda x: x.split()[0]
Splits a string into a list.
Extracts the first word from a string.
Concatenates two strings.
Reverses a string.
Answer: Option
Explanation:
The lambda function extracts the first word from a string using the split() method.
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