a
äx¶c ã @ s* d dl mZ ddd„Zeeffdd„ZdS )é )Ú filterfalseNc c sb t ƒ }|j}|du r6t|j| ƒD ]}||ƒ |V q n(| D ]"}||ƒ}||vr:||ƒ |V q:dS )zHList unique elements, preserving order. Remember all elements ever seen.N)ÚsetÚaddr Ú __contains__)ÚiterableÚkeyÚseenZseen_addÚelementÚk© r úA/usr/lib/python3.9/site-packages/importlib_metadata/_itertools.pyÚunique_everseen s
r
c C sX | du rt dƒS |dur,t| |ƒr,t | fƒS z
t | ƒW S tyR t | fƒ Y S 0 dS )ax If *obj* is iterable, return an iterator over its items::
>>> obj = (1, 2, 3)
>>> list(always_iterable(obj))
[1, 2, 3]
If *obj* is not iterable, return a one-item iterable containing *obj*::
>>> obj = 1
>>> list(always_iterable(obj))
[1]
If *obj* is ``None``, return an empty iterable:
>>> obj = None
>>> list(always_iterable(None))
[]
By default, binary and text strings are not considered iterable::
>>> obj = 'foo'
>>> list(always_iterable(obj))
['foo']
If *base_type* is set, objects for which ``isinstance(obj, base_type)``
returns ``True`` won't be considered iterable.
>>> obj = {'a': 1}
>>> list(always_iterable(obj)) # Iterate over the dict's keys
['a']
>>> list(always_iterable(obj, base_type=dict)) # Treat dicts as a unit
[{'a': 1}]
Set *base_type* to ``None`` to avoid any special handling and treat objects
Python considers iterable as iterable:
>>> obj = 'foo'
>>> list(always_iterable(obj, base_type=None))
['f', 'o', 'o']
Nr )ÚiterÚ
isinstanceÚ TypeError)ÚobjZ base_typer r r Úalways_iterable s )
r )N)Ú itertoolsr r
ÚstrÚbytesr r r r r Ú s