e6ec12ae71
Add support for foreign key constraints in has_index and has_unique_index. Remove has_indexed_foreign_key function (superceded now by more versatile has_index function).
30 lines
639 B
Python
30 lines
639 B
Python
import sys
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from collections import Iterable
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import six
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def str_coercible(cls):
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if sys.version_info[0] >= 3: # Python 3
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def __str__(self):
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return self.__unicode__()
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else: # Python 2
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def __str__(self):
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return self.__unicode__().encode('utf8')
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cls.__str__ = __str__
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return cls
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def is_sequence(value):
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return (
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isinstance(value, Iterable) and not isinstance(value, six.string_types)
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)
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def starts_with(iterable, prefix):
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"""
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Returns whether or not given iterable starts with given prefix.
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"""
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return list(iterable)[0:len(prefix)] == list(prefix)
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