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Python if … elif … else Statements

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🐍 Python Control Flow – The "Ifs", "Elses" & Dramatic Twists 🎭​

Ever wondered how Python decides what to do when it's torn between choices? 🤔
Meet the Conditional Statements – the dramatic decision-makers of Python!
These include if, if...else, and if...elif – Python's way of saying "Choose your destiny!"

🧠 Quick Brain Teaser​

a = 0

if a > 0:
    print("a is greater than 0")
elif a < 0:
    print("a is less than 0")
else:
    print("a is 0")

Just like your mood on a Monday morning, Python checks whether a is feeling high, low, or just neutral.

1. Using if – The Curious Checker 🤓​

Python's if is like that nosy friend who checks if something is true, then spills the beans.

a = 10
b = 20

if b > a:
  print("b is greater than a")      #Prints this message

1.1. 🪜 Mind the Indentation​

Unlike other languages that use curly braces ({}), Python loves to keep things clean and indented. Think of it like polite formatting – mess it up, and Python gets passive-aggressive (aka throws errors).

1.2. 🤝 Teamwork with Logical Operators​

Want to combine forces like Avengers? Use:

  • and – both conditions must be true 🟢🟢
  • or – at least one condition must be true 🟢🔴
a = 10
b = 20
c = 30

if b > a and c > a:
  print("b and c are greater than a")   #Prints this message

1.3. 😎 One-Liner Coolness: Shorthand if​

Why write a full-blown if block when you can whisper it in one line?

if b > a: print("b is greater than a")

Perfect for when you're in a hurry or want to look fancy in front of your colleagues.

2. Using if...else – Python's Plan B 💡​

If Python checks a condition and it turns out false, it goes:

"No worries, I’ve got a backup plan!" – Python, probably.

a = 100
b = 20

if b > a:
  print("b is greater than a")
else:
  print("b is smaller than a")     #Prints this message

Now in shorthand style – because we’re too cool for multiline sometimes:

a = 100
b = 20

print("b is greater than a") if (b > a) else print("b is smaller than a")  #Prints 'b is smaller than a'

3. elif – Python's Backup of the Backup 🚨​

elif is like saying:

"Okay, if Plan A didn’t work… maybe Plan B?"

x = 100
y = 200
z = 300

if y < x:
 print('y is less than x')
elif y < z:
 print('y is less than z')  #Prints this message

Each condition is checked in order until Python finds the one that hits the jackpot. 🎰

4. 🕵️‍♀️ Nested if...else – The Russian Dolls of Logic​

You can hide if inside another if like secrets in a mystery novel. It’s called nesting.

a = 20

if a > 10:
    print("a is greater than 10") #Prints this message
    if a < 20:
        print("a is less than 20")
    else:
        print("a is equal to 20")    #Prints this message

You can nest as deep as your heart (and indentation) desires. Just don’t forget where you are 😵‍💫.

5. Empty if – When You’ve Got Nothing to Say 🤐​

Python won’t let you ghost an if. If you really have nothing to do, just say:

"pass" – like a chill reply in a group chat.

x = 100
y = 200

if x < y:
 pass

No drama, no action. Just vibes.

🎉 Happy Learning, You Code Ninja! 🐍💻​

Remember: Python's if, else, and elif are your tools to tame logic beasts.
Use them wisely, and may your conditions always be True! 😉