Python Coding challenge - Day 989| What is the output of the following Python Code?

 

Code Explanation:

1. Class Definition

class Device:

    mode = "auto"

Explanation:

class Device:

→ This defines a class named Device.

mode = "auto"

→ This is a class variable.

It belongs to the class itself, not to any specific object.

All objects of Device can access this variable unless overridden.

2. Creating an Object

d = Device()

Explanation:

Device()

→ Creates a new object (instance) of the Device class.

d =

→ Stores that object in the variable d.

At this point:

d does not have its own mode

It uses Device.mode → "auto"

3. Accessing the Variable

print(d.mode)

Explanation:

Python looks for mode inside object d.

Since d has no instance variable called mode,

Python checks the class variable Device.mode.

Output:

auto

4. Modifying the Variable

d.mode = "manual"

Explanation:

This creates a new instance variable mode inside d only.

It does NOT change the class variable.

Now:

d.mode → "manual"

Device.mode → "auto"

5. Printing Class vs Object Variable

print(Device.mode, d.mode)

Explanation:

Device.mode

→ Refers to the class variable → "auto"

d.mode

→ Refers to the instance variable → "manual"

Output:

 auto auto manual

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