OOPL: JPL Python

Schedule

Week #1

Tue, 26 Apr 2022
Examples: Hello.py Assertions.py UnitTests1.py UnitTests2.py UnitTests3.py Coverage1.py Coverage2.py Coverage3.py Exercise #1: IsPrime IsPrime.py	Notes: 04-26.py References: print() __main__ assert import unittest coverage == is global raise errors exceptions

Takeaways: assertions are not good for testing `unittest` is good for testing assertions are not good for user errors exceptions are good for user errors
Thu, 28 Apr 2022
Examples: Types.py Exercise #2: Factorial Factorial.py	Notes: 04-28.py References: bool() int() float() complex() str() list() tuple() set() frozenset() dict() functions lambdas range()

Takeaways: user-defined exception classes should have `Exception` as their parent in a `try-except` block the `else` clause only runs if no exception is raised in a `try-except` block the `finally` clause always runs `==` compares value `is` compares identity `bool` is value cached `int` is value and literal cached `float` is literal cached `complex` is literal cached `str` is literal cached and immutable in content and size `list` is indexable and mutable `tuple` is indexable and immutable in content and size one-element `tuple`s must have a trailing comma `set` is iterable, not indexable, not ordered, with hashable, immutable, and unique keys `dict` is iterable, not indexable, not ordered, with hashable, immutable, and unique keys, and mutable values `self` is not a keyword `range()` is `O(1)`
Week #2

Tue, 03 May 2022
Examples: Operators.py Exercise #3: Reduce ReduceT.py	Notes: 05-03.py References: functools reduce operator

Takeaways: `for in` requires iterables iterables respond to `__iter__()` which return iterators iterators respond to `__next__()` which return the next value iterators eventually `raise` a `StopIteration` exception in-place operators on mutables change the object in-place operators on immutables create new objects class variables are shared by all instances of a class instance variables are unique to an instance of a class
Thu, 05 May 2022
Examples: Iteration.py Comprehensions.py	Notes: 05-05.py References: for statements special method names list comprehensions range() deque itertools count zip() map() filter()

Takeaways: containers have `__iter__` but not `__next__` iterators have `__iter__` and `__next__` `__iter__` on iterators returns `self` iterators exist to enable multiple clients to iterate over the same container at the same time `list`, `set`, and `dict` comprehensions are `O(n)` and eager generator comprehensions are `O(1)` and lazy generators are iterators generators capture objects `range()` behaves like a container `map()`, `filter()`, `count()`, and `zip()` behave like iterators
Week #3

Tue, 10 May 2022
Examples: Yield.py Exercise #4: DigitsIterator DigitsIterator.py Exercise #5: Map Map.py Examples: Iterables.py Functions.py	Notes: 05-10.py References: yield __call__

Takeaways: functions with `yield` create generators classes with `__call__` create callable instances functions capture names
Thu, 12 May 2022
Examples: Decorators.py Exercise #6: Cache Cache.py Examples: FunctionDefaults.py FunctionKeywords.py FunctionUnpacking.py FunctionTuple.py FunctionDict.py Exercise #7: Reduce2 Reduce2.py	Notes: 05-12.py References: default arguments keyword arguments spectial parameters unpacking

Takeaways: defaulted arguments must be the trailing arguments pass by position must precede by name iterable unpacking must precede dict unpacking `f(t, d)` will handle any* function call decorators enable composition of functionalities
Week #4

Tue, 17 May 2022
Exercise #8: MakeContainer MakeContainer.py Exercise #9: MapN MapN.py	Notes: 05-17.py References:

Takeaways:
Week #5

Tue, 24 May 2022
Examples: RegExps.py InstanceVariables.py ClassVariables.py InstanceMethods.py StaticMethods.py ClassMethods.py CommandLine.py FileInputOutput.py With.py FormattedOutput.py Inheritance.py Exercise #10: Complex Complex.py	Notes: 05-24.py References:

Takeaways: