Relational Operators

Relational operators compare two values and always return a boolean (True/False).

a, b = 10, 20
print(a == b)   # False
print(a != b)   # True
print(a < b)    # True
print(a >= b)   # False

Chained Comparisons

Python allows chaining comparisons in a single readable expression — an equivalent and is implied.

x = 15
print(10 < x < 20)        # True  -> equivalent to (10 < x) and (x < 20)
print(1 <= x <= 10)       # False

Comparing Strings

Strings are compared lexicographically (character by character, based on Unicode code points).

print("apple" < "banana")   # True ('a' < 'b')
print("Apple" == "apple")   # False (case sensitive)

Comparing Different Types

Comparing incompatible types with </> raises TypeError in Python 3:

# print(5 < "5")   # TypeError: '<' not supported between 'int' and 'str'
print(5 == "5")     # False — == is allowed, just returns False