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38 lines
970 B
Python
38 lines
970 B
Python
from .between import between
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from .utils import validator
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@validator
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def length(value, min=None, max=None):
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"""
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Return whether or not the length of given string is within a specified
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range.
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Examples::
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>>> length('something', min=2)
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True
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>>> length('something', min=9, max=9)
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True
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>>> length('something', max=5)
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ValidationFailure(func=length, ...)
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:param value:
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The string to validate.
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:param min:
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The minimum required length of the string. If not provided, minimum
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length will not be checked.
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:param max:
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The maximum length of the string. If not provided, maximum length
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will not be checked.
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.. versionadded:: 0.2
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"""
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if (min is not None and min < 0) or (max is not None and max < 0):
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raise AssertionError(
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'`min` and `max` need to be greater than zero.'
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)
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return between(len(value), min=min, max=max)
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