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# MrBazooka's solution

## to Beer Song in the Python Track

Published at Oct 21 2020 · 0 comments
Instructions
Test suite
Solution

Recite the lyrics to that beloved classic, that field-trip favorite: 99 Bottles of Beer on the Wall.

Note that not all verses are identical.

``````99 bottles of beer on the wall, 99 bottles of beer.
Take one down and pass it around, 98 bottles of beer on the wall.

98 bottles of beer on the wall, 98 bottles of beer.
Take one down and pass it around, 97 bottles of beer on the wall.

97 bottles of beer on the wall, 97 bottles of beer.
Take one down and pass it around, 96 bottles of beer on the wall.

96 bottles of beer on the wall, 96 bottles of beer.
Take one down and pass it around, 95 bottles of beer on the wall.

95 bottles of beer on the wall, 95 bottles of beer.
Take one down and pass it around, 94 bottles of beer on the wall.

94 bottles of beer on the wall, 94 bottles of beer.
Take one down and pass it around, 93 bottles of beer on the wall.

93 bottles of beer on the wall, 93 bottles of beer.
Take one down and pass it around, 92 bottles of beer on the wall.

92 bottles of beer on the wall, 92 bottles of beer.
Take one down and pass it around, 91 bottles of beer on the wall.

91 bottles of beer on the wall, 91 bottles of beer.
Take one down and pass it around, 90 bottles of beer on the wall.

90 bottles of beer on the wall, 90 bottles of beer.
Take one down and pass it around, 89 bottles of beer on the wall.

89 bottles of beer on the wall, 89 bottles of beer.
Take one down and pass it around, 88 bottles of beer on the wall.

88 bottles of beer on the wall, 88 bottles of beer.
Take one down and pass it around, 87 bottles of beer on the wall.

87 bottles of beer on the wall, 87 bottles of beer.
Take one down and pass it around, 86 bottles of beer on the wall.

86 bottles of beer on the wall, 86 bottles of beer.
Take one down and pass it around, 85 bottles of beer on the wall.

85 bottles of beer on the wall, 85 bottles of beer.
Take one down and pass it around, 84 bottles of beer on the wall.

84 bottles of beer on the wall, 84 bottles of beer.
Take one down and pass it around, 83 bottles of beer on the wall.

83 bottles of beer on the wall, 83 bottles of beer.
Take one down and pass it around, 82 bottles of beer on the wall.

82 bottles of beer on the wall, 82 bottles of beer.
Take one down and pass it around, 81 bottles of beer on the wall.

81 bottles of beer on the wall, 81 bottles of beer.
Take one down and pass it around, 80 bottles of beer on the wall.

80 bottles of beer on the wall, 80 bottles of beer.
Take one down and pass it around, 79 bottles of beer on the wall.

79 bottles of beer on the wall, 79 bottles of beer.
Take one down and pass it around, 78 bottles of beer on the wall.

78 bottles of beer on the wall, 78 bottles of beer.
Take one down and pass it around, 77 bottles of beer on the wall.

77 bottles of beer on the wall, 77 bottles of beer.
Take one down and pass it around, 76 bottles of beer on the wall.

76 bottles of beer on the wall, 76 bottles of beer.
Take one down and pass it around, 75 bottles of beer on the wall.

75 bottles of beer on the wall, 75 bottles of beer.
Take one down and pass it around, 74 bottles of beer on the wall.

74 bottles of beer on the wall, 74 bottles of beer.
Take one down and pass it around, 73 bottles of beer on the wall.

73 bottles of beer on the wall, 73 bottles of beer.
Take one down and pass it around, 72 bottles of beer on the wall.

72 bottles of beer on the wall, 72 bottles of beer.
Take one down and pass it around, 71 bottles of beer on the wall.

71 bottles of beer on the wall, 71 bottles of beer.
Take one down and pass it around, 70 bottles of beer on the wall.

70 bottles of beer on the wall, 70 bottles of beer.
Take one down and pass it around, 69 bottles of beer on the wall.

69 bottles of beer on the wall, 69 bottles of beer.
Take one down and pass it around, 68 bottles of beer on the wall.

68 bottles of beer on the wall, 68 bottles of beer.
Take one down and pass it around, 67 bottles of beer on the wall.

67 bottles of beer on the wall, 67 bottles of beer.
Take one down and pass it around, 66 bottles of beer on the wall.

66 bottles of beer on the wall, 66 bottles of beer.
Take one down and pass it around, 65 bottles of beer on the wall.

65 bottles of beer on the wall, 65 bottles of beer.
Take one down and pass it around, 64 bottles of beer on the wall.

64 bottles of beer on the wall, 64 bottles of beer.
Take one down and pass it around, 63 bottles of beer on the wall.

63 bottles of beer on the wall, 63 bottles of beer.
Take one down and pass it around, 62 bottles of beer on the wall.

62 bottles of beer on the wall, 62 bottles of beer.
Take one down and pass it around, 61 bottles of beer on the wall.

61 bottles of beer on the wall, 61 bottles of beer.
Take one down and pass it around, 60 bottles of beer on the wall.

60 bottles of beer on the wall, 60 bottles of beer.
Take one down and pass it around, 59 bottles of beer on the wall.

59 bottles of beer on the wall, 59 bottles of beer.
Take one down and pass it around, 58 bottles of beer on the wall.

58 bottles of beer on the wall, 58 bottles of beer.
Take one down and pass it around, 57 bottles of beer on the wall.

57 bottles of beer on the wall, 57 bottles of beer.
Take one down and pass it around, 56 bottles of beer on the wall.

56 bottles of beer on the wall, 56 bottles of beer.
Take one down and pass it around, 55 bottles of beer on the wall.

55 bottles of beer on the wall, 55 bottles of beer.
Take one down and pass it around, 54 bottles of beer on the wall.

54 bottles of beer on the wall, 54 bottles of beer.
Take one down and pass it around, 53 bottles of beer on the wall.

53 bottles of beer on the wall, 53 bottles of beer.
Take one down and pass it around, 52 bottles of beer on the wall.

52 bottles of beer on the wall, 52 bottles of beer.
Take one down and pass it around, 51 bottles of beer on the wall.

51 bottles of beer on the wall, 51 bottles of beer.
Take one down and pass it around, 50 bottles of beer on the wall.

50 bottles of beer on the wall, 50 bottles of beer.
Take one down and pass it around, 49 bottles of beer on the wall.

49 bottles of beer on the wall, 49 bottles of beer.
Take one down and pass it around, 48 bottles of beer on the wall.

48 bottles of beer on the wall, 48 bottles of beer.
Take one down and pass it around, 47 bottles of beer on the wall.

47 bottles of beer on the wall, 47 bottles of beer.
Take one down and pass it around, 46 bottles of beer on the wall.

46 bottles of beer on the wall, 46 bottles of beer.
Take one down and pass it around, 45 bottles of beer on the wall.

45 bottles of beer on the wall, 45 bottles of beer.
Take one down and pass it around, 44 bottles of beer on the wall.

44 bottles of beer on the wall, 44 bottles of beer.
Take one down and pass it around, 43 bottles of beer on the wall.

43 bottles of beer on the wall, 43 bottles of beer.
Take one down and pass it around, 42 bottles of beer on the wall.

42 bottles of beer on the wall, 42 bottles of beer.
Take one down and pass it around, 41 bottles of beer on the wall.

41 bottles of beer on the wall, 41 bottles of beer.
Take one down and pass it around, 40 bottles of beer on the wall.

40 bottles of beer on the wall, 40 bottles of beer.
Take one down and pass it around, 39 bottles of beer on the wall.

39 bottles of beer on the wall, 39 bottles of beer.
Take one down and pass it around, 38 bottles of beer on the wall.

38 bottles of beer on the wall, 38 bottles of beer.
Take one down and pass it around, 37 bottles of beer on the wall.

37 bottles of beer on the wall, 37 bottles of beer.
Take one down and pass it around, 36 bottles of beer on the wall.

36 bottles of beer on the wall, 36 bottles of beer.
Take one down and pass it around, 35 bottles of beer on the wall.

35 bottles of beer on the wall, 35 bottles of beer.
Take one down and pass it around, 34 bottles of beer on the wall.

34 bottles of beer on the wall, 34 bottles of beer.
Take one down and pass it around, 33 bottles of beer on the wall.

33 bottles of beer on the wall, 33 bottles of beer.
Take one down and pass it around, 32 bottles of beer on the wall.

32 bottles of beer on the wall, 32 bottles of beer.
Take one down and pass it around, 31 bottles of beer on the wall.

31 bottles of beer on the wall, 31 bottles of beer.
Take one down and pass it around, 30 bottles of beer on the wall.

30 bottles of beer on the wall, 30 bottles of beer.
Take one down and pass it around, 29 bottles of beer on the wall.

29 bottles of beer on the wall, 29 bottles of beer.
Take one down and pass it around, 28 bottles of beer on the wall.

28 bottles of beer on the wall, 28 bottles of beer.
Take one down and pass it around, 27 bottles of beer on the wall.

27 bottles of beer on the wall, 27 bottles of beer.
Take one down and pass it around, 26 bottles of beer on the wall.

26 bottles of beer on the wall, 26 bottles of beer.
Take one down and pass it around, 25 bottles of beer on the wall.

25 bottles of beer on the wall, 25 bottles of beer.
Take one down and pass it around, 24 bottles of beer on the wall.

24 bottles of beer on the wall, 24 bottles of beer.
Take one down and pass it around, 23 bottles of beer on the wall.

23 bottles of beer on the wall, 23 bottles of beer.
Take one down and pass it around, 22 bottles of beer on the wall.

22 bottles of beer on the wall, 22 bottles of beer.
Take one down and pass it around, 21 bottles of beer on the wall.

21 bottles of beer on the wall, 21 bottles of beer.
Take one down and pass it around, 20 bottles of beer on the wall.

20 bottles of beer on the wall, 20 bottles of beer.
Take one down and pass it around, 19 bottles of beer on the wall.

19 bottles of beer on the wall, 19 bottles of beer.
Take one down and pass it around, 18 bottles of beer on the wall.

18 bottles of beer on the wall, 18 bottles of beer.
Take one down and pass it around, 17 bottles of beer on the wall.

17 bottles of beer on the wall, 17 bottles of beer.
Take one down and pass it around, 16 bottles of beer on the wall.

16 bottles of beer on the wall, 16 bottles of beer.
Take one down and pass it around, 15 bottles of beer on the wall.

15 bottles of beer on the wall, 15 bottles of beer.
Take one down and pass it around, 14 bottles of beer on the wall.

14 bottles of beer on the wall, 14 bottles of beer.
Take one down and pass it around, 13 bottles of beer on the wall.

13 bottles of beer on the wall, 13 bottles of beer.
Take one down and pass it around, 12 bottles of beer on the wall.

12 bottles of beer on the wall, 12 bottles of beer.
Take one down and pass it around, 11 bottles of beer on the wall.

11 bottles of beer on the wall, 11 bottles of beer.
Take one down and pass it around, 10 bottles of beer on the wall.

10 bottles of beer on the wall, 10 bottles of beer.
Take one down and pass it around, 9 bottles of beer on the wall.

9 bottles of beer on the wall, 9 bottles of beer.
Take one down and pass it around, 8 bottles of beer on the wall.

8 bottles of beer on the wall, 8 bottles of beer.
Take one down and pass it around, 7 bottles of beer on the wall.

7 bottles of beer on the wall, 7 bottles of beer.
Take one down and pass it around, 6 bottles of beer on the wall.

6 bottles of beer on the wall, 6 bottles of beer.
Take one down and pass it around, 5 bottles of beer on the wall.

5 bottles of beer on the wall, 5 bottles of beer.
Take one down and pass it around, 4 bottles of beer on the wall.

4 bottles of beer on the wall, 4 bottles of beer.
Take one down and pass it around, 3 bottles of beer on the wall.

3 bottles of beer on the wall, 3 bottles of beer.
Take one down and pass it around, 2 bottles of beer on the wall.

2 bottles of beer on the wall, 2 bottles of beer.
Take one down and pass it around, 1 bottle of beer on the wall.

1 bottle of beer on the wall, 1 bottle of beer.
Take it down and pass it around, no more bottles of beer on the wall.

No more bottles of beer on the wall, no more bottles of beer.
Go to the store and buy some more, 99 bottles of beer on the wall.
``````

## For bonus points

Did you get the tests passing and the code clean? If you want to, these are some additional things you could try:

• Remove as much duplication as you possibly can.
• Optimize for readability, even if it means introducing duplication.
• If you've removed all the duplication, do you have a lot of conditionals? Try replacing the conditionals with polymorphism, if it applies in this language. How readable is it?

Then please share your thoughts in a comment on the submission. Did this experiment make the code better? Worse? Did you learn anything from it?

## Exception messages

Sometimes it is necessary to raise an exception. When you do this, you should include a meaningful error message to indicate what the source of the error is. This makes your code more readable and helps significantly with debugging. Not every exercise will require you to raise an exception, but for those that do, the tests will only pass if you include a message.

To raise a message with an exception, just write it as an argument to the exception type. For example, instead of `raise Exception`, you should write:

``````raise Exception("Meaningful message indicating the source of the error")
``````

## Running the tests

To run the tests, run `pytest beer_song_test.py`

Alternatively, you can tell Python to run the pytest module: `python -m pytest beer_song_test.py`

### Common `pytest` options

• `-v` : enable verbose output
• `-x` : stop running tests on first failure
• `--ff` : run failures from previous test before running other test cases

For other options, see `python -m pytest -h`

## Submitting Exercises

Note that, when trying to submit an exercise, make sure the solution is in the `\$EXERCISM_WORKSPACE/python/beer-song` directory.

You can find your Exercism workspace by running `exercism debug` and looking for the line that starts with `Workspace`.

For more detailed information about running tests, code style and linting, please see Running the Tests.

## Source

Learn to Program by Chris Pine http://pine.fm/LearnToProgram/?Chapter=06

## Submitting Incomplete Solutions

It's possible to submit an incomplete solution so you can see how others have completed the exercise.

### beer_song_test.py

``````import unittest

from beer_song import recite

class BeerSongTest(unittest.TestCase):
def test_first_generic_verse(self):
expected = [
"99 bottles of beer on the wall, 99 bottles of beer.",
"Take one down and pass it around, 98 bottles of beer on the wall.",
]
self.assertEqual(recite(start=99), expected)

def test_last_generic_verse(self):
expected = [
"3 bottles of beer on the wall, 3 bottles of beer.",
"Take one down and pass it around, 2 bottles of beer on the wall.",
]
self.assertEqual(recite(start=3), expected)

def test_verse_with_2_bottles(self):
expected = [
"2 bottles of beer on the wall, 2 bottles of beer.",
"Take one down and pass it around, 1 bottle of beer on the wall.",
]
self.assertEqual(recite(start=2), expected)

def test_verse_with_1_bottle(self):
expected = [
"1 bottle of beer on the wall, 1 bottle of beer.",
"Take it down and pass it around, no more bottles of beer on the wall.",
]
self.assertEqual(recite(start=1), expected)

def test_verse_with_0_bottles(self):
expected = [
"No more bottles of beer on the wall, no more bottles of beer.",
"Go to the store and buy some more, 99 bottles of beer on the wall.",
]
self.assertEqual(recite(start=0), expected)

def test_first_two_verses(self):
expected = [
"99 bottles of beer on the wall, 99 bottles of beer.",
"Take one down and pass it around, 98 bottles of beer on the wall.",
"",
"98 bottles of beer on the wall, 98 bottles of beer.",
"Take one down and pass it around, 97 bottles of beer on the wall.",
]
self.assertEqual(recite(start=99, take=2), expected)

def test_last_three_verses(self):
expected = [
"2 bottles of beer on the wall, 2 bottles of beer.",
"Take one down and pass it around, 1 bottle of beer on the wall.",
"",
"1 bottle of beer on the wall, 1 bottle of beer.",
"Take it down and pass it around, no more bottles of beer on the wall.",
"",
"No more bottles of beer on the wall, no more bottles of beer.",
"Go to the store and buy some more, 99 bottles of beer on the wall.",
]
self.assertEqual(recite(start=2, take=3), expected)

def test_all_verses(self):
expected = [
"99 bottles of beer on the wall, 99 bottles of beer.",
"Take one down and pass it around, 98 bottles of beer on the wall.",
"",
"98 bottles of beer on the wall, 98 bottles of beer.",
"Take one down and pass it around, 97 bottles of beer on the wall.",
"",
"97 bottles of beer on the wall, 97 bottles of beer.",
"Take one down and pass it around, 96 bottles of beer on the wall.",
"",
"96 bottles of beer on the wall, 96 bottles of beer.",
"Take one down and pass it around, 95 bottles of beer on the wall.",
"",
"95 bottles of beer on the wall, 95 bottles of beer.",
"Take one down and pass it around, 94 bottles of beer on the wall.",
"",
"94 bottles of beer on the wall, 94 bottles of beer.",
"Take one down and pass it around, 93 bottles of beer on the wall.",
"",
"93 bottles of beer on the wall, 93 bottles of beer.",
"Take one down and pass it around, 92 bottles of beer on the wall.",
"",
"92 bottles of beer on the wall, 92 bottles of beer.",
"Take one down and pass it around, 91 bottles of beer on the wall.",
"",
"91 bottles of beer on the wall, 91 bottles of beer.",
"Take one down and pass it around, 90 bottles of beer on the wall.",
"",
"90 bottles of beer on the wall, 90 bottles of beer.",
"Take one down and pass it around, 89 bottles of beer on the wall.",
"",
"89 bottles of beer on the wall, 89 bottles of beer.",
"Take one down and pass it around, 88 bottles of beer on the wall.",
"",
"88 bottles of beer on the wall, 88 bottles of beer.",
"Take one down and pass it around, 87 bottles of beer on the wall.",
"",
"87 bottles of beer on the wall, 87 bottles of beer.",
"Take one down and pass it around, 86 bottles of beer on the wall.",
"",
"86 bottles of beer on the wall, 86 bottles of beer.",
"Take one down and pass it around, 85 bottles of beer on the wall.",
"",
"85 bottles of beer on the wall, 85 bottles of beer.",
"Take one down and pass it around, 84 bottles of beer on the wall.",
"",
"84 bottles of beer on the wall, 84 bottles of beer.",
"Take one down and pass it around, 83 bottles of beer on the wall.",
"",
"83 bottles of beer on the wall, 83 bottles of beer.",
"Take one down and pass it around, 82 bottles of beer on the wall.",
"",
"82 bottles of beer on the wall, 82 bottles of beer.",
"Take one down and pass it around, 81 bottles of beer on the wall.",
"",
"81 bottles of beer on the wall, 81 bottles of beer.",
"Take one down and pass it around, 80 bottles of beer on the wall.",
"",
"80 bottles of beer on the wall, 80 bottles of beer.",
"Take one down and pass it around, 79 bottles of beer on the wall.",
"",
"79 bottles of beer on the wall, 79 bottles of beer.",
"Take one down and pass it around, 78 bottles of beer on the wall.",
"",
"78 bottles of beer on the wall, 78 bottles of beer.",
"Take one down and pass it around, 77 bottles of beer on the wall.",
"",
"77 bottles of beer on the wall, 77 bottles of beer.",
"Take one down and pass it around, 76 bottles of beer on the wall.",
"",
"76 bottles of beer on the wall, 76 bottles of beer.",
"Take one down and pass it around, 75 bottles of beer on the wall.",
"",
"75 bottles of beer on the wall, 75 bottles of beer.",
"Take one down and pass it around, 74 bottles of beer on the wall.",
"",
"74 bottles of beer on the wall, 74 bottles of beer.",
"Take one down and pass it around, 73 bottles of beer on the wall.",
"",
"73 bottles of beer on the wall, 73 bottles of beer.",
"Take one down and pass it around, 72 bottles of beer on the wall.",
"",
"72 bottles of beer on the wall, 72 bottles of beer.",
"Take one down and pass it around, 71 bottles of beer on the wall.",
"",
"71 bottles of beer on the wall, 71 bottles of beer.",
"Take one down and pass it around, 70 bottles of beer on the wall.",
"",
"70 bottles of beer on the wall, 70 bottles of beer.",
"Take one down and pass it around, 69 bottles of beer on the wall.",
"",
"69 bottles of beer on the wall, 69 bottles of beer.",
"Take one down and pass it around, 68 bottles of beer on the wall.",
"",
"68 bottles of beer on the wall, 68 bottles of beer.",
"Take one down and pass it around, 67 bottles of beer on the wall.",
"",
"67 bottles of beer on the wall, 67 bottles of beer.",
"Take one down and pass it around, 66 bottles of beer on the wall.",
"",
"66 bottles of beer on the wall, 66 bottles of beer.",
"Take one down and pass it around, 65 bottles of beer on the wall.",
"",
"65 bottles of beer on the wall, 65 bottles of beer.",
"Take one down and pass it around, 64 bottles of beer on the wall.",
"",
"64 bottles of beer on the wall, 64 bottles of beer.",
"Take one down and pass it around, 63 bottles of beer on the wall.",
"",
"63 bottles of beer on the wall, 63 bottles of beer.",
"Take one down and pass it around, 62 bottles of beer on the wall.",
"",
"62 bottles of beer on the wall, 62 bottles of beer.",
"Take one down and pass it around, 61 bottles of beer on the wall.",
"",
"61 bottles of beer on the wall, 61 bottles of beer.",
"Take one down and pass it around, 60 bottles of beer on the wall.",
"",
"60 bottles of beer on the wall, 60 bottles of beer.",
"Take one down and pass it around, 59 bottles of beer on the wall.",
"",
"59 bottles of beer on the wall, 59 bottles of beer.",
"Take one down and pass it around, 58 bottles of beer on the wall.",
"",
"58 bottles of beer on the wall, 58 bottles of beer.",
"Take one down and pass it around, 57 bottles of beer on the wall.",
"",
"57 bottles of beer on the wall, 57 bottles of beer.",
"Take one down and pass it around, 56 bottles of beer on the wall.",
"",
"56 bottles of beer on the wall, 56 bottles of beer.",
"Take one down and pass it around, 55 bottles of beer on the wall.",
"",
"55 bottles of beer on the wall, 55 bottles of beer.",
"Take one down and pass it around, 54 bottles of beer on the wall.",
"",
"54 bottles of beer on the wall, 54 bottles of beer.",
"Take one down and pass it around, 53 bottles of beer on the wall.",
"",
"53 bottles of beer on the wall, 53 bottles of beer.",
"Take one down and pass it around, 52 bottles of beer on the wall.",
"",
"52 bottles of beer on the wall, 52 bottles of beer.",
"Take one down and pass it around, 51 bottles of beer on the wall.",
"",
"51 bottles of beer on the wall, 51 bottles of beer.",
"Take one down and pass it around, 50 bottles of beer on the wall.",
"",
"50 bottles of beer on the wall, 50 bottles of beer.",
"Take one down and pass it around, 49 bottles of beer on the wall.",
"",
"49 bottles of beer on the wall, 49 bottles of beer.",
"Take one down and pass it around, 48 bottles of beer on the wall.",
"",
"48 bottles of beer on the wall, 48 bottles of beer.",
"Take one down and pass it around, 47 bottles of beer on the wall.",
"",
"47 bottles of beer on the wall, 47 bottles of beer.",
"Take one down and pass it around, 46 bottles of beer on the wall.",
"",
"46 bottles of beer on the wall, 46 bottles of beer.",
"Take one down and pass it around, 45 bottles of beer on the wall.",
"",
"45 bottles of beer on the wall, 45 bottles of beer.",
"Take one down and pass it around, 44 bottles of beer on the wall.",
"",
"44 bottles of beer on the wall, 44 bottles of beer.",
"Take one down and pass it around, 43 bottles of beer on the wall.",
"",
"43 bottles of beer on the wall, 43 bottles of beer.",
"Take one down and pass it around, 42 bottles of beer on the wall.",
"",
"42 bottles of beer on the wall, 42 bottles of beer.",
"Take one down and pass it around, 41 bottles of beer on the wall.",
"",
"41 bottles of beer on the wall, 41 bottles of beer.",
"Take one down and pass it around, 40 bottles of beer on the wall.",
"",
"40 bottles of beer on the wall, 40 bottles of beer.",
"Take one down and pass it around, 39 bottles of beer on the wall.",
"",
"39 bottles of beer on the wall, 39 bottles of beer.",
"Take one down and pass it around, 38 bottles of beer on the wall.",
"",
"38 bottles of beer on the wall, 38 bottles of beer.",
"Take one down and pass it around, 37 bottles of beer on the wall.",
"",
"37 bottles of beer on the wall, 37 bottles of beer.",
"Take one down and pass it around, 36 bottles of beer on the wall.",
"",
"36 bottles of beer on the wall, 36 bottles of beer.",
"Take one down and pass it around, 35 bottles of beer on the wall.",
"",
"35 bottles of beer on the wall, 35 bottles of beer.",
"Take one down and pass it around, 34 bottles of beer on the wall.",
"",
"34 bottles of beer on the wall, 34 bottles of beer.",
"Take one down and pass it around, 33 bottles of beer on the wall.",
"",
"33 bottles of beer on the wall, 33 bottles of beer.",
"Take one down and pass it around, 32 bottles of beer on the wall.",
"",
"32 bottles of beer on the wall, 32 bottles of beer.",
"Take one down and pass it around, 31 bottles of beer on the wall.",
"",
"31 bottles of beer on the wall, 31 bottles of beer.",
"Take one down and pass it around, 30 bottles of beer on the wall.",
"",
"30 bottles of beer on the wall, 30 bottles of beer.",
"Take one down and pass it around, 29 bottles of beer on the wall.",
"",
"29 bottles of beer on the wall, 29 bottles of beer.",
"Take one down and pass it around, 28 bottles of beer on the wall.",
"",
"28 bottles of beer on the wall, 28 bottles of beer.",
"Take one down and pass it around, 27 bottles of beer on the wall.",
"",
"27 bottles of beer on the wall, 27 bottles of beer.",
"Take one down and pass it around, 26 bottles of beer on the wall.",
"",
"26 bottles of beer on the wall, 26 bottles of beer.",
"Take one down and pass it around, 25 bottles of beer on the wall.",
"",
"25 bottles of beer on the wall, 25 bottles of beer.",
"Take one down and pass it around, 24 bottles of beer on the wall.",
"",
"24 bottles of beer on the wall, 24 bottles of beer.",
"Take one down and pass it around, 23 bottles of beer on the wall.",
"",
"23 bottles of beer on the wall, 23 bottles of beer.",
"Take one down and pass it around, 22 bottles of beer on the wall.",
"",
"22 bottles of beer on the wall, 22 bottles of beer.",
"Take one down and pass it around, 21 bottles of beer on the wall.",
"",
"21 bottles of beer on the wall, 21 bottles of beer.",
"Take one down and pass it around, 20 bottles of beer on the wall.",
"",
"20 bottles of beer on the wall, 20 bottles of beer.",
"Take one down and pass it around, 19 bottles of beer on the wall.",
"",
"19 bottles of beer on the wall, 19 bottles of beer.",
"Take one down and pass it around, 18 bottles of beer on the wall.",
"",
"18 bottles of beer on the wall, 18 bottles of beer.",
"Take one down and pass it around, 17 bottles of beer on the wall.",
"",
"17 bottles of beer on the wall, 17 bottles of beer.",
"Take one down and pass it around, 16 bottles of beer on the wall.",
"",
"16 bottles of beer on the wall, 16 bottles of beer.",
"Take one down and pass it around, 15 bottles of beer on the wall.",
"",
"15 bottles of beer on the wall, 15 bottles of beer.",
"Take one down and pass it around, 14 bottles of beer on the wall.",
"",
"14 bottles of beer on the wall, 14 bottles of beer.",
"Take one down and pass it around, 13 bottles of beer on the wall.",
"",
"13 bottles of beer on the wall, 13 bottles of beer.",
"Take one down and pass it around, 12 bottles of beer on the wall.",
"",
"12 bottles of beer on the wall, 12 bottles of beer.",
"Take one down and pass it around, 11 bottles of beer on the wall.",
"",
"11 bottles of beer on the wall, 11 bottles of beer.",
"Take one down and pass it around, 10 bottles of beer on the wall.",
"",
"10 bottles of beer on the wall, 10 bottles of beer.",
"Take one down and pass it around, 9 bottles of beer on the wall.",
"",
"9 bottles of beer on the wall, 9 bottles of beer.",
"Take one down and pass it around, 8 bottles of beer on the wall.",
"",
"8 bottles of beer on the wall, 8 bottles of beer.",
"Take one down and pass it around, 7 bottles of beer on the wall.",
"",
"7 bottles of beer on the wall, 7 bottles of beer.",
"Take one down and pass it around, 6 bottles of beer on the wall.",
"",
"6 bottles of beer on the wall, 6 bottles of beer.",
"Take one down and pass it around, 5 bottles of beer on the wall.",
"",
"5 bottles of beer on the wall, 5 bottles of beer.",
"Take one down and pass it around, 4 bottles of beer on the wall.",
"",
"4 bottles of beer on the wall, 4 bottles of beer.",
"Take one down and pass it around, 3 bottles of beer on the wall.",
"",
"3 bottles of beer on the wall, 3 bottles of beer.",
"Take one down and pass it around, 2 bottles of beer on the wall.",
"",
"2 bottles of beer on the wall, 2 bottles of beer.",
"Take one down and pass it around, 1 bottle of beer on the wall.",
"",
"1 bottle of beer on the wall, 1 bottle of beer.",
"Take it down and pass it around, no more bottles of beer on the wall.",
"",
"No more bottles of beer on the wall, no more bottles of beer.",
"Go to the store and buy some more, 99 bottles of beer on the wall.",
]
self.assertEqual(recite(start=99, take=100), expected)

if __name__ == "__main__":
unittest.main()``````
``````def recite(start, take=1):
bottles = start
max_verses = take
song = []

for verse in range(max_verses):
if bottles == 0:
song.extend(no_bottle_verse())
elif bottles == 1:
song.extend(one_bottle_verse())
elif bottles == 2:
song.extend(two_bottle_verse())
elif bottles > 2:
song.extend(generic_verse(bottles))

if verse < (max_verses-1):
song.append('')

bottles -= 1
return song

def generic_verse(num):
verse = [
f'{num} bottles of beer on the wall, {num} bottles of beer.',
f'Take one down and pass it around, {num-1} bottles of beer on the wall.'
]
return verse

def two_bottle_verse(num=2):
verse = [
f'{num} bottles of beer on the wall, {num} bottles of beer.',
f'Take one down and pass it around, {num-1} bottle of beer on the wall.'
]
return verse

def one_bottle_verse(num=1):
verse = [
f'{num} bottle of beer on the wall, {num} bottle of beer.',
f'Take it down and pass it around, no more bottles of beer on the wall.'
]
return verse

def no_bottle_verse():
verse = [
'No more bottles of beer on the wall, no more bottles of beer.',
'Go to the store and buy some more, 99 bottles of beer on the wall.'
]
return verse``````