ExamAdept

What is the purpose of the contextlib module?

A:

Working with context managers

B:

Handling dates and times

C:

Parsing JSON data

D:

Sorting elements in a list

Answer: A

The contextlib module in Python provides utilities for working with context managers, including the contextlib.contextmanager decorator.

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Which method is used to join elements of a list into a single string?

A:

list.combine()

B:

list.concat()

C:

list.join()

D:

str.join()

Answer: D

The join() method is used to join elements of a list into a single string in Python.

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What is the purpose of the collections.ChainMap class?

A:

Chaining multiple dictionaries into a single view

B:

Sorting elements in a list

C:

Working with regular expressions

D:

Handling dates and times

Answer: A

The collections.ChainMap class in Python is used to chain multiple dictionaries into a single view, allowing you to access them as a single dictionary.

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Which module in Python provides functions for working with the file system, such as copying, moving, and deleting files?

A:

filesystem

B:

fileutils

C:

os.path

D:

shutil

Answer: D

The shutil module in Python provides functions for working with the file system, such as copying, moving, and deleting files.

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What is the purpose of the collections.deque class?

A:

Implementing queues and priority queues

B:

Sorting elements in a list

C:

Handling dates and times

D:

Creating a dictionary with default values

Answer: A

The collections.deque class in Python is used to implement double-ended queues, which can be used for efficiently adding and removing elements from both ends.

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Questions for: Standard Libraries