In Python, int is indeed a data type. It stands for integer and represents whole numbers without any decimal points. Integers can be positive, negative, or zero.
Defining an Integer
To define an integer variable in Python, you simply assign a value to it using the = operator. For example:
x = 10
The variable x now holds the value 10, which is an integer.
Operations on Integers
You can perform various operations on integers in Python. Some commonly used operations include:
- Addition (+): Adds two integers together.
- Subtraction (-): Subtracts one integer from another.
- Multiplication (*): Multiplies two integers.
- Division (/): Divides one integer by another and returns a float.
- Floor Division (//): Divides one integer by another and returns an integer (quotient).
- Modulus (%): Returns the remainder of the division between two integers.
- Exponentiation (**): Raises one integer to the power of another.
a = 5 b = 3 result = a + b print(result) # Output: 8
In this example, we add two integers (a and b) together and store the result in the variable result. The print() function is used to display the result, which is 8.
Conversion to Integer
Sometimes, you may need to convert other data types to integers. Python provides built-in functions for this purpose:
- int(): Converts a float or string to an integer.
- float(): Converts an integer or string to a float.
- str(): Converts an integer or float to a string.
x = int(3.14) y = int("5") z = str(10) print(x) # Output: 3 print(y) # Output: 5 print(z) # Output: "10"
In these examples, we convert a float (3.14) and a string (“5”) to integers using the int() function. Similarly, we convert an integer (10) to a string using the str() function.
To check if a variable holds an integer value, you can use the type() function:
x = 10 if type(x) == int: print("x is an integer.") else: print("x is not an integer.")
This code snippet checks if the variable x is of type int using the type() function and prints the corresponding message.
In conclusion, int is a fundamental data type in Python that represents whole numbers. It allows you to perform arithmetic operations and convert other data types to integers as needed.