ExamAdept

What happens if a lambda function has more parameters than arguments provided during its invocation?

A:

It raises a SyntaxError.

B:

The extra parameters are ignored.

C:

It raises a TypeError.

D:

The lambda function automatically assigns default values to the extra parameters.

Answer: C

If a lambda function is defined with more parameters than provided during invocation, a TypeError is raised.

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How is a lambda function different from a regular function in terms of defining and using it?

A:

Lambda functions are defined using the keyword lambda and can be used immediately, while regular functions are defined with def.

B:

Regular functions are defined using the keyword lambda and can be used immediately, while lambda functions are defined with def.

C:

Both lambda and regular functions are defined using the keyword func and can be used interchangeably.

D:

Lambda functions are defined using the keyword def and require parentheses around parameters, while regular functions use lambda without parentheses.

Answer: A

Lambda functions are defined using the lambda keyword and are typically used for short-term, specific tasks without the need for a formal function definition.

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Which built-in function can be used to find the minimum value in an iterable using a lambda function?

A:

sum()

B:

min()

C:

reduce()

D:

filter()

Answer: B

The min() function can be used with a lambda function to find the minimum value in an iterable based on the lambda function's criteria.

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What is the result of the following Python code?

my_list = [1, 2, 3, 4, 5]
result = list(map(lambda x: x * 2, my_list))
print(result)

A:

[1, 2, 3, 4, 5]

B:

[2, 4, 6, 8, 10]

C:

[1, 4, 9, 16, 25]

D:

[1, 2, 3, 4, 5, 1, 2, 3, 4, 5]

Answer: B

The map() function applies the lambda function lambda x: x * 2 to each element of my_list, doubling each value.

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What is the purpose of the following code using the enumerate() function and a lambda function?

my_list = [1, 2, 3, 4, 5]
result = list(map(lambda x: x[0] * x[1], enumerate(my_list)))

A:

To apply the lambda function to each element of an iterable

B:

To filter elements from an iterable based on the lambda function's condition

C:

To create a sorted list based on the lambda function's values

D:

To create a list of products of each element and its index in the iterable

Answer: D

The code uses enumerate() to get tuples of index and element, and the lambda function multiplies the index (x[0]) by the element (x[1]).

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Questions for: Lambda Functions