Initial commit

grammatical_types.py

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+
+class PartOfSpeech(str):
+    "A grammatical part of speech"
+
+class NounPhrase(PartOfSpeech):
+    """A phrase whose head is a noun. May contain a determiner and adjectives. 
+    Examples: eagle, evil mountain, several delicious candies. that lady
+    """
+
+class DeterminedNounPhrase(NounPhrase):
+    """A NounPhrase containing a determiner. 
+    Examples: my shirt, the pencil, any dog
+    """
+
+class Pronoun(DeterminedNounPhrase):
+    """A noun referring to another noun.
+    Examples: I, you, it, he, she
+    """
+
+class Noun(NounPhrase):
+    """A base noun (which is a valid NounPhrase).
+    Examples: child, pillow, chair, you
+    """
+
+class PluralNoun(Noun):
+    """A noun referring to more than one of something.
+    Examples: cats, houses, ideas, people
+    """
+
+class VerbPhrase(PartOfSpeech):
+    """A phrase whose head is a verb, possibly containing adverbs.
+    Examples: think, eat a donut, swim in the ocean
+    """
+
+class TransitiveVerb(PartOfSpeech):
+    """A verb which has a subject and an object. 
+    (Note that many verbs may be transitive or intransitive. You can eat or eat an apple.
+    Examples: annoy, cancel, chase, disobey
+    """
+
+class IntransitiveVerb(VerbPhrase):
+    """A verb with a subject but no object.
+    Examples: sleep, depart, run, jump
+    """
+
+class PastTenseTransitiveVerb(TransitiveVerb):
+    """A transitive verb in the past tense.
+    Examples: canceled, chased, disobeyed, praised
+    """
+
+class PastTenseIntransitiveVerb(IntransitiveVerb):
+    """An intransitive verb in the past tense. 
+    Examples: slept, departed, ran, jumped
+    """
+
+class Adjective(PartOfSpeech):
+    """A word which describes a noun. 
+    Examples: blue, ugly, tiny, late
+    """
+
+class Adverb(PartOfSpeech):
+    """A word which describes a verb. 
+    Examples: quickly, violently, suspiciously, boldly
+    """
+
+class Determiner(PartOfSpeech):
+    """A word which comes before a noun phrase and determines its referent.
+    Examples: my, your, a, an, the, that, some
+    """
+
+class Sentence(PartOfSpeech):
+    """A noun phrase and a verb phrase.
+    Examples: I ate some old bread. The cat caught the bird. The broken chair regretted its history.
+    """
+
+class Meter(str):
+    """The stress pattern of a word's syllables. 
+    A Meter is a string of digits. 1 means primary stress (loudest), 
+    2 means secondary stress (medium), and 0 means unstressed (quiet). 
+    For example, the meter of 'animal' is '100', the meter of 'helicopter' is '1020', and
+    the meter of 'inexcusable' is '20100'.
+    """
+
+    def __init__(self, code):
+        allowed_digits = ['0', '1', '2']
+        if not all(digit in allowed_digits for digit in code):
+            raise ValueError("A Meter must be a string of digits, 0-2, like '1020'")
+
+class Poem(list):
+    """A Poem is just a list which can format itself nicely on multiple lines.
+    """
+    def __str__(self):
+        return "\n".join(str(line).capitalize() for line in self)