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ChrisBarker-NOAAChrisBarker-NOAA
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started framework for the first class
1 parent eb48c37 commit 726c8da

21 files changed

Lines changed: 321 additions & 39 deletions

‎week-01/code/circle.py‎

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#!/usr/bin/env python
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"""
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circle class -- my solution to the exercise
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This version with doctests...
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"""
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import math
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class Circle(object):
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"""
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A class that defines a circle.
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You can get and set either the radius or the diameter with properties. Example:
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>>> c = Circle(4)
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>>> c.radius
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4.0
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>>> c.diameter
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8.0
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>>> c.diameter = 4
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>>> c.radius
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2.0
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>>> c.area
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12.566370614359172
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>>> c2 = Circle(6)
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>>> c + c2
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Circle(8.000000)
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>>> str(c2)
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'Circle Object with radius: 6.000000'
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>>>
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"""
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def __init__(self, radius):
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self.radius = float(radius)
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@property
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def diameter(self):
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return self.radius * 2.0
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@diameter.setter
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def diameter(self, value):
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self.radius = value / 2.0
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@property
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def area(self):
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return self.radius**2 * math.pi
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def __add__(self, other):
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return Circle(self.radius + other.radius)
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def __repr__(self):
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return "Circle(%f)"%self.radius
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def __str__(self):
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return "Circle Object with radius: %f"%self.radius
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if __name__ == "__main__":
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import doctest
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print doctest.testmod()

‎week-01/code/codingbat.py‎

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#!/usr/bin/env python
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"""
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Examples from: http://codingbat.com
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Put here so we can write unit tests for them ourselves
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"""
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# Python > Warmup-1 > sleep_in
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def sleep_in(weekday, vacation):
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return not (weekday == True and vacation == False)
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‎week-01/code/codingbat_unittest.py‎

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#!/usr/bin/env python
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"""
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test file for codingbat module
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This version used unittest
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"""
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import unittest
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from codingbat import sleep_in
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class Test_sleep_in(unittest.TestCase):
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def test_false_false(self):
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self.assertTrue( sleep_in(False, False) )
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def test_true_false(self):
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self.assertFalse( sleep_in(True, False) )
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def test_false_true(self):
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self.assertTrue( sleep_in(False, True) )
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def test_true_true(self):
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self.assertTrue( sleep_in(True, True) )
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if __name__ == "__main__":
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unittest.main()
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‎week-01/code/profile_example.py‎

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#!/usr/bin/env python
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"""
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code for testing profiling
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borrowed from:
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http://pysnippet.blogspot.com/2009/12/profiling-your-python-code.html
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"""
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def odd_numbers(max):
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""" Returns a list with all odd numbers between 0 to max (inclusive) """
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l = list()
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for i in xrange(max+1):
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if (i & 1):
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l.append(i)
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return l
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def sum_odd_numbers(max):
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""" Sum all odd numbers between 0 to max (inclusive) """
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odd_nbrs = odd_numbers(max)
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res = 0
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for odd in odd_nbrs:
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res += odd
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return res
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def main():
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# Run this 100 times to make it measurable
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for i in xrange(100):
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print sum_odd_numbers(1024)
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if __name__ == '__main__':
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main()
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‎week-01/code/test_codingbat.py‎

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#!/usr/bin/env python
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"""
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test file for codingbat module
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This version can be run with nose or py.test
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"""
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from codingbat import sleep_in
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def test_false_false():
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assert sleep_in(False, False)
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def test_true_false():
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assert not ( sleep_in(True, False) )
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def test_false_true():
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assert sleep_in(False, True)
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def test_true_true():
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assert sleep_in(True, True)
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‎week-01/code/test_pytest_parameter.py‎

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#!/usr/bin/env python
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"""
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pytest example of a parameterized test
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"""
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import pytest
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# a (really simple) function to test
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def add(a, b):
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"""
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returns the sum of a and b
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"""
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return a + b
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# now some test data:
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test_data = [ ( ( 2, 3), 5),
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( (-3, 2), -1),
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( ( 2, 0.5), 2.5),
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( ( "this", "that"), "thisthat"),
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( ( [1,2,3], [6,7,8]), [1,2,3,6,7,8]),
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]
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@pytest.mark.parametrize(("input", "result"), test_data)
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def test_add(input, result):
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assert add(*input) == result

‎week-01/code/test_random_nose.py‎

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#!/usr/bin/env python
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"""
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port of the random unit tests from the python docs to nose/py.test
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"""
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import random
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import nose.tools
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seq = range(10)
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def test_shuffle():
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# make sure the shuffled sequence does not lose any elements
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random.shuffle(seq)
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seq.sort()
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assert seq == range(10)
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@nose.tools.raises(TypeError)
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def test_shuffle_immutable():
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# should raise an exception for an immutable sequence
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random.shuffle( (1,2,3) )
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def test_choice():
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element = random.choice(seq)
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assert (element in seq)
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def test_sample():
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for element in random.sample(seq, 5):
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assert element in seq
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@nose.tools.raises(ValueError)
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def test_sample_too_large():
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random.sample(seq, 20)

‎week-01/code/test_random_pytest.py‎

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#!/usr/bin/env python
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"""
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port of the random unit tests from the python docs to nose/py.test
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"""
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import random
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import pytest
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seq = range(10)
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def test_shuffle():
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# make sure the shuffled sequence does not lose any elements
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random.shuffle(seq)
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seq.sort()
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print "seq:", seq
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assert seq == range(10)
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def test_shuffle_immutable():
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pytest.raises(TypeError, random.shuffle, (1,2,3) )
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def test_choice():
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element = random.choice(seq)
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assert (element in seq)
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def test_sample():
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for element in random.sample(seq, 5):
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assert element in seq
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def test_sample_too_large():
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with pytest.raises(ValueError):
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random.sample(seq, 20)

‎week-01/code/timing.py‎

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#!/usr/bin/env python
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"""
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timing example
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"""
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def primes_stupid(N):
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"""
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a really simple way to compute the first N prime numbers
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"""
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primes = [2]
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i = 3
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while len(primes) < N:
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for j in range(2, i/2): # the "/2" is an optimization -- no point in checking even numbers
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if not i % j: # it's not prime
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break
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else:
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primes.append(i)
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i += 1
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return primes
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if __name__ == "__main__":
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import timeit
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print "running the timer:"
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run_time = timeit.timeit("primes_stupid(5)",
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setup="from __main__ import primes_stupid",
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number=100000) # default: 1000000
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print "it took:", run_time

‎week-01/code/unittest_example.py‎

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import random
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import unittest
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class TestSequenceFunctions(unittest.TestCase):
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def setUp(self):
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self.seq = range(10)
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def test_shuffle(self):
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# make sure the shuffled sequence does not lose any elements
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random.shuffle(self.seq)
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self.seq.sort()
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self.assertEqual(self.seq, range(10))
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# should raise an exception for an immutable sequence
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self.assertRaises(TypeError, random.shuffle, [1,2,3])
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def test_choice(self):
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element = random.choice(self.seq)
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self.assertTrue(element in self.seq)
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def test_sample(self):
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with self.assertRaises(ValueError):
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random.sample(self.seq, 20)
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for element in random.sample(self.seq, 5):
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self.assertTrue(element in self.seq)
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if __name__ == '__main__':
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unittest.main()

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