Summary

Summary Python for Beginners

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Course
COMPUTER SCIENCE

Institution

introduces core Python concepts. It covers explains variables, data types (strings, integers, floats), and basic operators. Control flow structures like if statements and loops (for, while) are explained. It also introduces functions, lists, dictionaries, and how to handle input/output in Python.

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Uploaded on October 18, 2024
Number of pages 2
Written in 2024/2025
Type Summary

python

Institution Secondary school
COMPUTER SCIENCE
School year 5

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1. Basic Syntax and Data Types:
 Variables: Used to store data. Python allows dynamic typing (you
don’t need to declare the type).
 Data Types: Python includes types like integers (whole numbers),
floats (decimals), strings (text), and booleans ( True/False ).
 Operators: Arithmetic operations ( +, -, *, /), comparison ( >, <, ==),
and logical ( and, or, not ) operators are key to manipulating data.

2. Control Flow:
 If-Else Statements: Python lets you control how the code executes
by checking conditions. For example:
python
Copy code
if x > 10 : print ( "x is greater than 10" ) else : print ( "x is less than or equal to
10" )
 Loops:
 For Loops: Used for iterating over a sequence (like a list or
range).
 While Loops: Repeats as long as a condition is true.
 Both loops can be controlled using break (to exit early)
and continue (to skip to the next iteration).

3. Functions:
 Functions are blocks of reusable code that perform specific tasks.
 Defined using the def keyword:
python
Copy code
def greet ( name ): print ( f"Hello, {name}" ) greet( "Alice" )

 Functions can take arguments (inputs) and return values.

4. Data Structures:
 Lists: Ordered collections of items. You can access elements by
index and perform operations like append() , pop() , and slicing.
 Dictionaries: Stores data as key-value pairs. Access elements by
key, not index.
 Tuples: Immutable lists (can't be changed after creation). Useful for
fixed collections of data.
 Sets: Unordered collections of unique items. Useful for operations
like unions and intersections.

5. Input/Output:

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