Wi2018-Classroom/students/jim/Lesson11/Lesson11.tar at b319f26995e9f3a39122e0113abc53c03e1a1f4c · UWPCE-PythonCert-ClassRepos/Wi2018-Classroom · GitHub

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generator_solution.py0000664000175000017500000000104613272222456015536 0ustar  diogenesdiogenesimport math

def intsum():
    a = 0
    b = 0
    while True:
        a += b
        yield a
        b += 1


def doubler():
    a = 1
    while True:
        yield a
        a *= 2


def fib():
    a,b = 0,1
    while True:
        yield b
        a, b = b, a+b


def prime():
    yield 2 # get this outlier out of the way first
    a = 3
    while True:
        for i in range(2, math.ceil(math.sqrt(a))+1):
            if a % i == 0:
                break
        else:
            yield a
        a += 2 # skip all even numbers to save some timeiterator_1.py0000664000175000017500000000162713267533161013674 0ustar  diogenesdiogenes#!/usr/bin/env python

"""
Simple iterator examples
"""


class IterateMe_1:
    """
    About as simple an iterator as you can get:

    returns the sequence of numbers from zero to 4
    ( like range(4) )
    """

    def __init__(self, start=-1, stop=5, step=1):
        self.current, self.start = start, start
        self.stop = stop
        self.step = step

    def __iter__(self):
        return self

    def __next__(self):
        self.current += self.step
        if self.current < self.stop:
            return self.current
        else:
            raise StopIteration

    def reset(self):
        self.current = self.start


if __name__ == "__main__":

    print("Testing the iterator")
    for i in IterateMe_1(-1, 50, 4):
        print(i)

    it = IterateMe_1(2, 20, 2)

    for i in it:
        if i > 10:
            it.reset()
            break
        print(i)

    for i in it:
        print(i)
spotify.py0000664000175000017500000000072613271753416013321 0ustar  diogenesdiogenesimport pandas as pd

music = pd.read_csv("featuresdf.csv")

songs_we_want = [music.iloc[x] for x in range(len(music.index))
                 if music.iloc[x].danceability > 0.8 and
                 music.iloc[x].loudness < -5.0]

songs_we_want.sort(key=lambda song: song.danceability, reverse=True)

for i in songs_we_want:
    print(i.artists, "--", i[1])


# Why does i.name give the index number instead of the field value?
# Anyway I can get it with i[1] but... why?test_generator.py0000664000175000017500000000206113267531677014653 0ustar  diogenesdiogenes"""
test_generator.py

tests the solution to the generator lab

can be run with py.test or nosetests
"""

import generator_solution as gen


def test_intsum():

    g = gen.intsum()

    assert next(g) == 0
    assert next(g) == 1
    assert next(g) == 3
    assert next(g) == 6
    assert next(g) == 10
    assert next(g) == 15


def test_intsum2():

    g = gen.intsum2()

    assert next(g) == 0
    assert next(g) == 1
    assert next(g) == 3
    assert next(g) == 6
    assert next(g) == 10
    assert next(g) == 15


def test_doubler():

    g = gen.doubler()

    assert next(g) == 1
    assert next(g) == 2
    assert next(g) == 4
    assert next(g) == 8
    assert next(g) == 16
    assert next(g) == 32

    for i in range(10):
        j = next(g)

    assert j == 2**15


def test_fib():
    g = gen.fib()
    assert [next(g) for i in range(9)] == [1, 1, 2, 3, 5, 8, 13, 21, 34]


def test_prime():
    g = gen.prime()
    for val in [2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97]:
        assert next(g) == val