Lession 2: Control Structure in Python by Github Copilot

 To demonstrate control structures in Python, let's add some examples of `if-else` statements, `for` loops, and `while` loops to your existing code.

```python

num_str = "123"

num_int = int(num_str)  # Converts string to integer

print(num_int)           # Output: 123

# If-else statement

if num_int > 100:

    print("The number is greater than 100")

else:

    print("The number is 100 or less")

# For loop

for i in range(5):

    print(f"Iteration {i}")

# While loop

count = 0

while count < 5:

    print(f"Count is {count}")

    count += 1

```

This code demonstrates:

1. An `if-else` statement to check if 

num_int

 is greater than 100.

2. A `for` loop to iterate 5 times.

3. A `while` loop to count from 0 to 4.