POC Modules, Libraries & Debugging 3

Question 1

What does the `os.path.join()` function do?

Accepted Answer

Builds file paths using the OS-appropriate separator

Answer

`os.path.join()` constructs a path string using the correct separator for the current operating system.

Question 2

Which module provides the `defaultdict` and `Counter` data structures?

Accepted Answer

collections

Answer

`collections` is the standard library module that contains `defaultdict`, `Counter`, `OrderedDict`, and `deque`.

Question 3

What is a Python package?

Accepted Answer

A directory containing an `__init__.py` file and modules

Answer

A package is a directory that contains an `__init__.py` file, allowing it to be imported as a namespace.

Question 4

How do you set a conditional breakpoint in `pdb` that only triggers when `x > 10`?

Accepted Answer

condition 1 x > 10

Answer

The `condition bpnumber expression` command in pdb applies a condition to an existing breakpoint number.

Question 5

Which `logging` function call creates a message at the DEBUG level?

Accepted Answer

logging.debug('msg')

Answer

`logging.debug()` logs a message with severity DEBUG, the lowest standard level.

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