Lession 2: Control Structure in Python by Chat GPT

 In Python, control structures determine the flow of execution in a program. These include conditional statements, loops, and jump statements. Here’s an overview:

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1. Conditional Statements

Conditional statements allow you to execute code based on conditions.

if, elif, else

x = 10
if x > 5:  # Condition is True
    print("x is greater than 5")
elif x == 5:  # Optional; executes if the first condition is False
    print("x is equal to 5")
else:  # Executes if all conditions above are False
    print("x is less than 5")

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2. Loops

Loops are used to execute a block of code repeatedly.

for Loop

Iterates over a sequence (like a list, tuple, string, or range).

for i in range(5):  # Iterates from 0 to 4
    print(i)

# Example with a list
colors = ["red", "blue", "green"]
for color in colors:
    print(color)

while Loop

Repeats as long as a condition is True.

count = 0
while count < 5:  # Loop until count reaches 5
    print(count)
    count += 1

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3. Jump Statements

Control the flow of loops.

break

Exits the loop prematurely.

for i in range(10):
    if i == 5:
        break  # Exit the loop
    print(i)

continue

Skips the current iteration and moves to the next.

for i in range(5):
    if i == 2:
        continue  # Skip this iteration
    print(i)

pass

A placeholder that does nothing.

if True:
    pass  # Placeholder for future code

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4. Nested Control Structures

Control structures can be nested inside each other.

for i in range(3):
    if i % 2 == 0:
        print(f"{i} is even")
    else:
        print(f"{i} is odd")

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5. Exception Handling (Control Flow with try-except)

Manages errors and exceptions gracefully.

try:
    result = 10 / 0
except ZeroDivisionError:
    print("Cannot divide by zero!")

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These are the essential control structures in Python that help you manage program execution flow. Would you like a deeper dive into any specific type?