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Python Basics
š¹ Variables = Store data for use in a program
x = 1 print(x) # Output: 1š¹ Data Types = Classification of data (Boolean, String, Number)
number = 10 if number > 0: print("The number is true") # Output: trueš¹ Operators = Symbols for performing operations (+, -, *, /, %, etc.)
print(1 + 2) # Output: 3 print(2 - 1) # Output: 1š¹ Control Statements = Manage program execution flow ā Conditional Statements ā "if-then" logic
score = 85 if score >= 90: print("Excellent") elif score >= 75: print("Good job") else: print("Keep trying")ā Loop Statements ā Repeat actions (for, while loops)
count = 1 while count <= 5: print(count) count += 1š¹ Functions = Reusable blocks of code
def my_function(): print("Hello from a function") my_function() # Output: Hello from a function
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š Introduction to Programming with Python
š¹ Software = Instructions for hardware
š¹ Programming = Writing instructions to create software
š¹ Code = The instructions written to build software
š¹ Syntax = The grammar of a programming language
š” Why Python? Python is beginner-friendly, powerful, and requires minimal code compared to other languages. Example: Printing "Hello World" is simpler in Python than in Java!
ā” Compiler vs. Interpreter
š¹ Compiler (C, C++) ā Translates entire code at once ā Faster execution
š¹ Interpreter (Python, Java) ā Executes code line by line ā Easier debugging
š„ Key Concepts
ā
Source Code = Human-readable instructions
ā
Processor = The brain of a computer
ā
Bytecode = Intermediate code generated after compilation
š Pros & Cons
āļø Compilers = Faster execution, better security, debugging tools
ā Compilers = Slower compilation, catches only syntax/semantic errors
āļø Interpreters = Easy debugging, efficient memory usage
ā Interpreters = Slower execution
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