POC Implementation & Configuration 3

Question 1

What does the `PYTHONPATH` environment variable control?

Accepted Answer

Additional directories prepended to `sys.path` for module searching

Answer

`PYTHONPATH` is a colon-separated list of directories that Python prepends to `sys.path` before the interpreter starts.

Question 2

Which `setup.py` command builds a source distribution archive?

Accepted Answer

python setup.py sdist

Answer

`python setup.py sdist` creates a source distribution tarball (`.tar.gz`) in the `dist/` directory.

Question 3

What is the role of `__init__.py` in a Python package directory?

Accepted Answer

It marks the directory as a Python package and runs on import

Answer

`__init__.py` signals to Python that the directory is a package and its code runs when the package is first imported.

Question 4

Which approach correctly reads a value from an environment variable with a fallback default in Python?

Accepted Answer

os.environ.get('KEY', 'default')

Answer

`os.environ.get('KEY', 'default')` returns the environment variable value or 'default' if the key is absent.

Question 5

In Python packaging, what does a `MANIFEST.in` file specify?

Accepted Answer

Additional files to include in source distributions

Answer

`MANIFEST.in` uses directives like `include` and `recursive-include` to add non-Python files (docs, data) to a source distribution.

(POC) Python Online Certification Practice Test