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Summary Python Introduction

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  • PYTHON
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  • University Of The People

High-level programming language. Easy-to-learn syntax and readability. Widely used in various fields, such as web development, data analysis, machine learning, automation, and more. Interpreted and dynamically typed. Cross-platform compatibility. Extensive standard library and third-party pack...

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  • December 24, 2024
  • 3
  • 2024/2025
  • Summary

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  • University Of The People
  • PYTHON

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PYTHON INTRODUCTION NOTES


Welcome to the Introduction to Python chapter! In this section, we'll explore the
fundamental concepts of Python programming, along with some practical examples to
help illustrate each concept.

First, let's address one of the most common questions: why learn Python? Here are a
few reasons:

Python is a versatile language that can be used for a wide variety of applications,
from web development to data analysis to machine learning.
Python is known for its simplicity and readability, making it an excellent choice
for beginners.
Python has a large and active community, which means that there are plenty of
resources available for learning and troubleshooting.
Now, let's dive into the content!

Variables
In Python, variables are used to store data in memory. Variables can be assigned a
value using the = operator. For example:

x = 5
name = "Alice"
Note that Python is dynamically typed, which means that you don't need to declare
the data type of a variable explicitly.

Data Types
Python supports several data types, including:

Integers (e.g. 5, -3, 0)
Floating-point numbers (e.g. 5.0, -3.14, 0.0)
Strings (e.g. "Hello, world!", 'Python', "")
Lists (e.g. [1, 2, 3], ["a", "b", "c"], [1, "a", [2, 3]])
You can check the data type of a variable using the type() function.

Operators
Python supports several types of operators, including:

Arithmetic operators (e.g. +, -, *, /, %, **, //)
Comparison operators (e.g. ==, !=, <, >, <=, >=)
Logical operators (e.g. and, or, not)
Here's an example of using arithmetic operators in Python:

x = 5
y = 2

print(x + y) # 7
print(x - y) # 3
print(x * y) # 10
print(x / y) # 2.5
print(x % y) # 1
print(x ** y) # 25 (5^2)
print(x // y) # 2 (integer division)
Control Flow
Python supports several control flow statements, including:

if, elif, else statements
for loops

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