PYTHON — Integers in Python

Artificial intelligence is growing up fast, as are robots whose facial expressions can elicit empathy and make your mirror neurons quiver. — Diane Ackerman

PYTHON — Python Walrus Operator Pitfalls

# Understanding Integers in Python

Integers are whole numbers with no decimal places in Python, represented by the int data type. In this tutorial, we will delve into creating integers, understanding different numeral systems, and using the int() function in Python.

Creating Integers

The quickest way to create an integer in Python is by writing an integer literal consisting of digits. For example, typing 42 in the Python interpreter creates an integer. You can use the type() function to confirm that it's an integer.

num = 42
print(type(num))  # Output: <class 'int'>

Integers also include negative numbers and large numbers, which can be made more readable by using underscores to delimit groups of digits.

big_num = 10_000_000_000
print(big_num)  # Output: 10000000000

Different Numeral Systems

Python allows expressing integers using different numeral systems. For instance, the number 42 can be represented in binary, hexadecimal, or octal systems by prefixing the integer literal with 0b, 0x, or 0o respectively.

binary_num = 0b101010  # Output: 42
hex_num = 0x2a  # Output: 42
octal_num = 0o52  # Output: 42

Using the int() Function

The int() function in Python is used to convert a value to an integer. When called without a specific value, it returns 0. You can pass different numeral systems as the second argument to interpret a string of digits in that base.

num_str = "42"
num_int = int(num_str)  # Output: 42
num_bin = int("101010", 2)  # Output: 42

Additionally, the int() function can be used to truncate the fractional part of a floating-point number.

float_num = 3.14
int_num = int(float_num)  # Output: 3

Conclusion

In this tutorial, we explored various ways of creating and manipulating integers in Python. We discussed creating integers through literals, understanding different numeral systems, and using the int() function for conversions. This knowledge will be crucial as you continue to work with numerical data in Python.

PYTHON — Python Audio Player