[Solved] You have a module config.py with a variable setting = 5. In your main program, you do:import config config.setting = 10 import config print(config.setting)What will be printed and why? | Python

Python - Modules and Code Organization

You have a module config.py with a variable setting = 5. In your main program, you do:

import config
config.setting = 10
import config
print(config.setting)

What will be printed and why?

A10, because the module is loaded once and changes persist.

BError, because you cannot assign to module variables.

C5, because the second import reloads the module resetting variables.

DNone, because the variable is not accessible after import.

Step-by-Step Solution

Solution:

Step 1: Understand module import caching
Python loads a module once and caches it; subsequent imports reuse the same module object.
Step 2: Analyze variable assignment and import
Changing config.setting to 10 modifies the cached module. The second import does not reload, so the change remains.
Final Answer:
10, because the module is loaded once and changes persist. -> Option A
Quick Check:
Module cached; changes persist = C [OK]

Quick Trick: Module imports cache; variable changes stay across imports [OK]

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