PCAP-31-03 1.5 Create and Use User-Defined Modules and Packages PCAP-31 Practice Questions (Page 4)

Questions 16–20

1. 16foundation · easy

   Which list does Python consult to find a module when it is imported?

   • AThe `sys.argv` list
   • BThe `os.environ` list
   • CThe `sys.path` list
   • DThe `sys.modules` list
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2. 17foundation · easy

   In a module, which naming convention indicates that a variable is intended to be private?

   • AA name that ends with a double underscore, such as `secret__`
   • BA name that starts with a single underscore, such as `_secret`
   • CA name written in all capital letters, such as `SECRET`
   • DA name that contains the word `private`, such as `private_secret`
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4. 18application · medium

   A developer has the following directory structure: ``` project/ main.py utils/ __init__.py helpers.py ``` The `__init__.py` file is empty. The developer wants to import `helpers` from `main.py`. Which import statement will work?

   • A`from . import helpers`
   • B`import utils.helpers`
   • C`from utils import helpers`
   • D`import helpers`
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5. 19application · medium

   A developer has a module `mymod.py` in the current working directory. The developer runs a script from a different directory that imports `mymod`. The import fails with `ModuleNotFoundError`. The developer checks `sys.path` and sees that the current working directory is NOT listed. What is the most direct way to make the import work without permanently changing the system?

   • AAdd the directory containing `mymod.py` to `sys.path` at the start of the script.
   • BMove `mymod.py` into the `__pycache__` directory.
   • CRename `mymod.py` to `_mymod.py`.
   • DCreate a `__pycache__` directory in the script's directory.
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6. 20foundation · easy

   What is the primary benefit of placing related functions and constants into a user-defined module?

   • AIt guarantees that the code runs faster because modules are precompiled.
   • BIt automatically makes all variables in the module global to the importing program.
   • CIt allows the same code to be reused across multiple programs without copying it.
   • DIt prevents any other module from accessing the functions defined inside it.
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