🧠 Python Logical Operators — Building Smart Conditions

Introduction 🌟

Logical operators allow you to combine multiple conditions and make more complex decisions in your programs. They return True or False just like comparison operators.

Note

💡 Logical operators are used heavily in if statements, loops, validations, and expressions.

1. List of Logical Operators 📋

OperatorMeaningExample
andTrue if both conditions are Truex > 5 and x < 10
orTrue if at least one condition is Truex > 5 or x == 5
notReverses the conditionnot (x == 5)

2. The AND Operator 🟢

and returns True only if **both** expressions are True.

logical_and.py

age = 20
country = "India"

print(age > 18 and country == "India")   # True
print(age > 18 and country == "USA")     # False

Note

✔️ Use and when multiple conditions must be met.

3. The OR Operator 🟡

or returns True if **any one** condition is True.

logical_or.py

marks = 65

print(marks > 70 or marks >= 60)   # True
print(marks > 70 or marks < 40)    # False

Note

✔️ Use or when one of several conditions is enough.

4. The NOT Operator 🔄

not reverses the truth value.

logical_not.py

is_active = True
print(not is_active)   # False

print(not (5 > 2))     # False
print(not (5 < 2))     # True

Note

✔️ Use not to invert conditions.

5. Combining Logical Operators 🔗

You can combine multiple logical expressions.

combined_logical.py

age = 22
citizen = True
has_id = False

if age >= 18 and citizen and (has_id or age > 21):
    print("Access granted")
else:
    print("Access denied")

6. Logical Operators With Comparisons 🔍

logical_compare.py

x = 15

print(x > 10 and x < 20)   # True
print(x < 10 or x == 15)   # True
print(not (x == 15))       # False

7. Logical Operators With Strings 🔤

logical_strings.py

name = "Sathish"

print(name.startswith("S") and len(name) > 5)  # True
print(name.endswith("h") or name.endswith("z")) # True

8. Logical Operators With Boolean Values ✔️

bool_values.py

print(True and False)   # False
print(True or False)    # True
print(not False)        # True

9. Truthy and Falsy Values 🧩

Python treats some values as False even if they are not boolean.

  • Falsy: 0, "", [], , None, False
  • Truthy: any non-empty or non-zero value

truthy_falsy.py

print(bool(0))       # False
print(bool("hi"))     # True
print(bool([]))       # False

10. Real-World Example 🌍

real_world_example.py

username = input("Enter username: ")
password = input("Enter password: ")

if username == "admin" and password == "1234":
    print("Login successful")
else:
    print("Access denied")

Conclusion 🎉

>>“Logical operators allow your program to think — combine conditions and build powerful logic!” 🔥

You now understand logical operators in Python. Want to continue with Bitwise Operators, Conditional Statements, Loops, or Expressions? Just tell me the next topic! 😊