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BCA-202N · Programming in Python
Unit 5

Iterators, Generators, Web Scraping & Testing

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Unit 5 Learning Hub

Iterators, Generators, Web Scraping & Testing

Official MJPRU BCA Unit 5: Iterators, Generators, Web Scraping & Testing for BCA-202N (Programming in Python).

Syllabus Topics:Iteration Protocol: Iterable vs Iterator, __iter__() and __next__() Methods, StopIteration ExceptionCustom Iterator Implementation: Building State-Tracking Iterable ClassesGenerators in Python: yield Statement, Generator Functions, Execution Pausing and Resumption StateGenerator Expressions: Memory-Efficient Lazy Stream Evaluation (expr for item in iterable)Python Exception Handling: try, except, else, finally Blocks, Exception Hierarchy (BaseException, Exception)Raising and Creating Custom Exceptions: raise Statement, Subclassing Exception ClassAssertions in Python: assert Statement, AssertionError, Debugging Flag (-O Flag Optimization)Python Testing and Debugging: pdb (Python Debugger - n, s, c, p commands), unittest Framework (TestCase, assertEqual)Web Scraping Fundamentals: HTTP Requests Protocol, RESTful APIs, urllib vs requests Library (GET, POST, Headers)HTML Parsing with Beautiful Soup (bs4): Soup Objects, NavigableStrings, Tag Finding (find, find_all, select CSS Selectors)Data Extraction & Sanitization: Scraping Tables, Attributes, Text Content, Handling PaginationEthical Web Scraping Practices: robots.txt Compliance, Request Throttling, User-Agent Headers, Rate Limiting
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Introduction to Computers & The IPO Cycle

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Topic 1 · The foundation of modern computing

Introduction to Computers & The IPO Cycle

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Ready to master this concept? Give it a quick read & tap the check!

💡 The Big Picture:A computer is an electronic system that takes raw data as Input, processes it under programmed logic, and produces meaningful Information as Output.
🍪 Everyday Analogy:Think of baking cookies: Flour & Sugar (Input) ➔ The Oven (Processing) ➔ Warm Delicious Cookie (Output)! 🍪
Key Exam Takeaways
  • ·Data = Raw, unprocessed facts without context (e.g. 42, 'apple').
  • ·Information = Structured data with meaning (e.g. 'Temperature: 42°C').
  • ·Hardware is what you can touch; Software is the instructions running inside.
Instant Knowledge Check
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Which of the following represents unprocessed raw facts?

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