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exercism/python/food-chain/food_chain.py
2019-07-24 17:24:22 -05:00

56 lines
2.1 KiB
Python

intro = "I know an old lady who swallowed a {}."
intro_addendums = [
"It wriggled and jiggled and tickled inside her.",
"How absurd to swallow a bird!",
"Imagine that, to swallow a cat!",
"What a hog, to swallow a dog!",
"Just opened her throat and swallowed a goat!",
"I don't know how she swallowed a cow!"
]
names = [
"fly",
"spider",
"bird",
"cat",
"dog",
"goat",
"cow",
"horse"
]
middle = "She swallowed the {} to catch the {}."
outro = "I don't know why she swallowed the fly. Perhaps she'll die."
last = "She\'s dead, of course!"
special_middle = "that wriggled and jiggled and tickled inside her"
# Just does the math for constructing single and multiple verses. I realized only halfway through that
# everything was going to be in lists, so I just used split, which honestly is easier than needing some kind of flattening
# or list extending setup to get the lists to be in proper order
def recite(start_verse, end_verse):
if start_verse == end_verse:
return construct(start_verse - 1).split('\n')
return '\n\n'.join(construct(verse) for verse in range(start_verse - 1, end_verse)).split('\n')
# Constructs a specific verse
def construct(verse):
# Constructs the middle part. Only the spider verse makes this function required.
def makemiddle(versen):
# Special spider inner verse
if versen == 2:
return middle.format(names[versen], names[versen-1] + ' ' + special_middle)
return middle.format(names[versen], names[versen-1])
# Horse verse
if verse == 7:
return "{}\n{}".format(intro.format(names[verse]), last)
# Constructs the intoduction of a verse
constructed_intro = '{}{}'.format(
intro.format(names[verse]),
'\n' + intro_addendums[verse-1] if verse > 0 else ''
)
constructed_middle = '\n'.join([''] + [makemiddle(versen) for versen in range(verse, 0, -1)]) if verse >= 1 else ''
# Finally constructs the entire verse properly.
return "{}{}{}".format(constructed_intro, constructed_middle, '\n' + outro)