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import operator
from typing import Any
from six import iteritems, string_types
from .utils import AttrDict
[docs]class Range(AttrDict):
OPS = {
"lt": operator.lt,
"lte": operator.le,
"gt": operator.gt,
"gte": operator.ge,
}
def __init__(self, *args: Any, **kwargs: Any) -> None:
if args and (len(args) > 1 or kwargs or not isinstance(args[0], dict)):
raise ValueError(
"Range accepts a single dictionary or a set of keyword arguments."
)
data = args[0] if args else kwargs
for k in data:
if k not in self.OPS:
raise ValueError("Range received an unknown operator %r" % k)
if "gt" in data and "gte" in data:
raise ValueError("You cannot specify both gt and gte for Range.")
if "lt" in data and "lte" in data:
raise ValueError("You cannot specify both lt and lte for Range.")
super(Range, self).__init__(args[0] if args else kwargs)
[docs] def __repr__(self) -> str:
return "Range(%s)" % ", ".join("%s=%r" % op for op in iteritems(self._d_))
def __contains__(self, item: Any) -> bool:
if isinstance(item, string_types):
return super(Range, self).__contains__(item)
for op in self.OPS:
if op in self._d_ and not self.OPS[op](item, self._d_[op]):
return False
return True
@property
def upper(self) -> Any:
if "lt" in self._d_:
return self._d_["lt"], False
if "lte" in self._d_:
return self._d_["lte"], True
return None, False
@property
def lower(self) -> Any:
if "gt" in self._d_:
return self._d_["gt"], False
if "gte" in self._d_:
return self._d_["gte"], True
return None, False
__all__ = ["Range"]