Python Operators

What are Python operators?

Operators are symbols or words that perform an operation on one or more values. The values being operated on are called operands. For example, in total = price + tax, + adds two operands and = assigns the result to total.

Types of Python operators

1. Arithmetic operators

a = 15
b = 4
print(a + b)
print(a / b)
print(a // b)
print(a % b)
print(2 ** 3)

Python’s / operator returns a floating-point result. Floor division rounds down, which is important for negative values as well as positive values.

2. Comparison operators

Comparison expressions normally produce True or False and are commonly used in conditions:

score = 72
if score >= 50:
    print("Pass")

3. Assignment operators

The basic assignment operator stores a value. Augmented assignment combines an operation with assignment:

4. Logical operators

Python’s logical operators use short-circuit evaluation. For example, the right side of and may not run if the left side is already false.

5. Bitwise operators

Bitwise operators work on the binary representation of integers. They are useful for flags, masks, permissions, and low-level protocols.

6. Membership operators

in and not in test whether a value is contained in a string, list, tuple, set, or dictionary. For a dictionary, membership checks keys by default:

languages = ["Python", "Java"]
print("Python" in languages)
print("Go" not in languages)

student = {"name": "Asha"}
print("name" in student)

7. Identity operators

is and is not test whether two names refer to the same object. They are different from ==, which compares values:

first = [1, 2]
second = [1, 2]
same = first

print(first == second)  # True: values are equal
print(first is second)  # False: different list objects
print(first is same)    # True: same object

Use is None and is not None for None. Use == when you want to compare ordinary values.

Operator precedence

Precedence determines which operation is evaluated first. Parentheses make the intended order clear and are recommended when an expression could be misunderstood.

result = (10 + 5) * 2
print(result)

Operator best practices

• Use parentheses when they improve readability.
• Use == for value comparison and is mainly for identity checks such as None.
• Be careful when mixing strings and numbers; convert values explicitly when needed.
• Use bitwise operators only when the bit-level behavior is intentional and documented.