Python Coding challenge - Day 627| What is the output of the following Python Code?

 Code Explanation:

1. from typing import Generator

Explanation:

This line imports the Generator type hint from Python's typing module.

It's used to annotate generator functions for better readability and static type checking.

Generator[YIELD_TYPE, SEND_TYPE, RETURN_TYPE] — here you'll specify the type of values yielded, sent, and returned.

2. def count_up(n: int) -> Generator[int, None, None]:

Explanation:

This defines a function named count_up that takes a single argument n of type int.

The return type is annotated as Generator[int, None, None], meaning:

It yields values of type int.

It does not receive values via .send().

It does not return a final value using return.

3. for i in range(1, n+1):

Explanation:

This creates a for loop that iterates over the numbers from 1 to n, inclusive.

range(1, n+1) generates numbers from 1 up to and including n.

4. yield i

Explanation:

yield makes the function a generator.

Each time count_up() is iterated (e.g., in a loop or converted to a list), it will yield the next value of i.

This pauses the function, returning i to the caller, and resumes from the same place on the next iteration.

5. print(list(count_up(3)))

Explanation:

count_up(3) creates a generator that yields 1, 2, and 3.

list(...) consumes the generator and turns the yielded values into a list: [1, 2, 3].

print(...) outputs that list to the console.

Output:

[1, 2, 3]

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