lecture_06.md

Lecture 6

Organizing code

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Comments from survey

• "It would be helpful to have slightly more guidance on the labs … maybe the tasks broken down into smaller steps."
• "I feel like I could use a python refresher"
  • Resources
• "I'd like there to be some notification if additional readings are added."
  • Clarified in syllabus

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Grade breakdown tweaks

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How have you been organizing code (in this course and before)?

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…within files?

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…between files?

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Modules

Files! Things you import!

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Search path

1. Show Python's module search path.

   import sys
   sys.path

2. Look in those directories.

3. Look at csv.py.

4. Make a csv.py file the current directory.

   print("Aidan csv")

5. Try import csv.

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Refactoring

Let's refactor phone code from last lecture.

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Simulate an API call:

from time import sleep

sleep(5)

How do we keep the tests from being slow?

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Packages

Folders!

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How have you been organizing data?

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Data structures

a data structure is a collection of data values, the relationships among them, and the functions or operations that can be applied to the data

Encyclopedia of Computer Science, 2003

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What data structures exist in Python?

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Abstraction

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Object-Oriented Programming (OOP)

Intro from Python course

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Code/test coverage

pytest-cov

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pytest --cov --cov-report html
open htmlcov/index.html

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Branching

Not the Git kind

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Project Part 4

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Revisit expectations