The simplest Python basics cheat sheet

Python basics cheat sheet

Welcome to your Python basics cheat sheet! This handy guide is designed to help you quickly and easily reference some of the most commonly used concepts and commands in Python programming. Python is a powerful, versatile and widely used programming language, that is known for its simplicity, readability and ease of use.

Python was first developed by Guido van Rossum in the late 1980s and it was designed to be easy to learn and easy to read. It quickly gained popularity and nowadays it’s used in a wide range of applications such as web development, machine learning, data science and many more.

Python offers a variety of features that make it an ideal language for beginners, including its simple and intuitive syntax, large standard library, and built-in support for common data types and structures.

This cheat sheet will cover the essential concepts and commands of Python programming, including variables, data types, operators, control flow, and more. Whether you’re just starting out on your coding journey or looking for a quick refresher, this cheat sheet has got you covered. So, let’s dive in and start exploring the world of Python programming together!

Data Types

int (integer)
float (floating point number)
str (string)
bool (boolean)

Variables

x = 5
y = "hello"
z = True

Operators

Arithmetic operators

+ : addition
- : subtraction
* : multiplication
/ : division
% : modulus (remainder)
** : exponentiation
// : floor division
+= : increment by a value
-= : decrement by a value

Comparison operators

== : equal to
!= : not equal to
< : less than
> : greater than
<= : less than or equal to
>= : greater than or equal to

Logical operators

and : logical and
or : logical or
not : logical negation

Identity operators

is : true if the operands are identical (refer to the same object)
is not : true if the operands are not identical (do not refer to the same object)

Membership operators

in : true if the value is found in the sequence (e.g. list, string, tuple)
not in : true if the value is not found in the sequence

Bitwise operators

& : bitwise and
| : bitwise or
^ : bitwise xor
~ : bitwise inversion
<< : left shift
>> : right shift

Assignment operators

= : assigns values
+= : adds and assigns
-= : subtracts and assigns
*= : multiplies and assigns
/= : divides and assigns
%= : takes modulus and assigns
**= : takes exponent and assigns
//= : takes floor division and assigns

Lists

my_list = [1, 2, 3, 4, 5]
my_list.append(6)
my_list.remove(4)

Loops

# For loop
for i in range(10):
    print(i)

# While loop
i = 0
while i < 10:
    print(i)
    i += 1

Conditional Statements

x = 5
if x > 0:
    print("x is positive")
elif x < 0:
    print("x is negative")
else:
    print("x is zero")

Functions

def add_numbers(x, y):
    return x + y

result = add_numbers(3, 4)
print(result)

Importing Libraries

import library_name

And there you have it, a comprehensive overview of some of the most important Python basics. Whether you’re a beginner or an experienced coder, this cheat sheet is a valuable tool to have on hand as you continue to learn and grow in the world of Python programming. Keep it handy and refer back to it as needed. Happy coding!

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