Add LexiconModel.by()
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import os
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import time
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from errors import InternalMisuseError, IndexMismatchError, MissingConfigError
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import config
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class LexiconModel():
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"""
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"""
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def by(lid=None, name=None):
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"""
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Gets the LexiconModel with the given lid or username
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If the lid or name simply does not match an existing lexicon, returns
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None. If the lid matches the index but there is something wrong with
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the lexicon's config, raises an error.
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"""
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if lid and name:
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raise InternalMisuseError("lid and name both specified to LexiconModel.by()")
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if not lid and not name:
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raise ValueError("One of lid or name must be not None")
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if not lid:
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with config.json_ro('lexicon', 'index.json') as index:
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lid = index.get(name)
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if not lid:
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return None
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if not os.path.isdir(config.prepend('lexicon', lid)):
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raise IndexMismatchError("lexicon={} lid={}".format(name, lid))
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if not os.path.isfile(config.prepend('lexicon', lid, 'config.json')):
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raise MissingConfigError("lid={}".format(lid))
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return LexiconModel(lid)
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def __init__(self, lid):
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if not os.path.isdir(config.prepend('lexicon', lid)):
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raise ValueError("No lexicon with lid {}".format(lid))
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