Skip to content

02_Control_Flow

Directory actions

More options

Directory actions

More options

Latest commit

 

History

History

02_Control_Flow

Folders and files

NameName
Last commit message
Last commit date

parent directory

..
README.md
README.md
 
 
conditions.ipynb
conditions.ipynb
 
 
loops.ipynb
loops.ipynb
 
 

README.md

📁 02 — Control Flow

Learn how Python makes decisions and repeats actions using conditions and loops.

📚 Topics Covered

🔀 Conditional Statements (conditions.ipynb)

# Topic Description
1 if Statement Executes a block only when condition is True
2 if / else Statement Executes if block when True, else block when False
3 if / elif / else Handles more than two conditions in sequence
4 Nested if An if statement inside another if statement

🔁 Loops & Loop Control (loops.ipynb)

# Topic Description
5 for Loop Repeats code over a sequence or range
6 while Loop Repeats code while condition remains True
7 break Statement Exits the loop immediately
8 continue Statement Skips current iteration and moves to next
9 pass Statement Placeholder for an empty block

📄 Files in This Folder

File Description
conditions.ipynb if, if/else, if/elif/else, Nested if — with real examples
loops.ipynb for loop, while loop, break, continue, pass — with real examples

💡 Key Concepts at a Glance

# ── if Statement ──────────────────────────────
marks = int(input("Enter Your Marks = "))
if marks > 40:
    print("PASS")           # runs only if condition is True


# ── if / else Statement ───────────────────────
age = int(input("Enter Your Age = "))
if age >= 18:
    print("Eligible for Driving License.")
else:
    print("Not Eligible for Driving License.")


# ── if / elif / else ──────────────────────────
num = int(input("Enter a Number = "))
if num > 0:
    print("Positive Number")
elif num < 0:
    print("Negative Number")
else:
    print("Equal to Zero")


# ── Nested if ─────────────────────────────────
username = "umar"
password = "umar1234"
if username == "umar":
    if password == "umar1234":
        print("Login Successful")
    else:
        print("Wrong Password")
else:
    print("Username Not Found")

🔄 if vs if/else vs if/elif/else

Statement Use When Outcomes
if Only one condition to check 1 possible outcome
if / else Two possible outcomes Always 1 of 2 runs
if / elif / else More than two conditions Always 1 of many runs
Nested if Second condition depends on first Multiple level checking

✅ Practice Tasks

# Task 1 — if Statement
# Ask user to enter temperature
# If temperature is greater than 40, print "Very Hot"

# Task 2 — if / else Statement
# Ask user to enter a number
# Print whether the number is Even or Odd

# Task 3 — if / elif / else
# Ask user to enter marks (0–100)
# Print grade: 90+=A+, 80+=A, 70+=B, 60+=C, 50+=D, below 50=F

# Task 4 — Nested if
# Ask user to enter a number
# Check if Positive or Negative
# If Positive — also check if Even or Odd

🎯 Who Is This For?

  • ✅ Grade 10–12 students (FBISE / Cambridge IGCSE)
  • ✅ BS Computer Science — Semester 1 students
  • ✅ Anyone who completed 01 — Python Fundamentals
  • ✅ Self-learners preparing for programming interviews

▶️ How To Run

Option 1 — View online: Click any .ipynb file directly on GitHub to read notes and outputs.

Option 2 — Run locally:

git clone https://github.com/umaraihub/Python-Programming.git
cd Python-Programming/02_Control_Flow
jupyter notebook

🔗 Navigation

Previous Current Next
📂 01 Fundamentals ← 📂 02 Control Flow 📂 03 Data Structures →

Part of the 🐍 Python Programming repository by Muhammad Umar