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.. testsetup::
from packaging.specifiers import Specifier, SpecifierSet, InvalidSpecifier
from packaging.version import Version
� )� annotationsN)�Callable�Iterable�Iterator�TypeVar�Union� )�canonicalize_version)�Version�UnparsedVersionVar)�boundc �< � t | t � s t | � } | S �N)�
isinstancer )�versions �C/opt/hc_python/lib/python3.12/site-packages/packaging/specifiers.py�_coerce_versionr s � � �g�w� '��'�"�� �N� c � � e Zd ZdZy)�InvalidSpecifiera
Raised when attempting to create a :class:`Specifier` with a specifier
string that is invalid.
>>> Specifier("lolwat")
Traceback (most recent call last):
...
packaging.specifiers.InvalidSpecifier: Invalid specifier: 'lolwat'
N)�__name__�
__module__� __qualname__�__doc__� r r r r s � �r r c �0 � e Zd Zej d d�� Zej d
d�� Zej d d�� Zeej d d�� � Z e j d
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BaseSpecifierc � � y)z�
Returns the str representation of this Specifier-like object. This
should be representative of the Specifier itself.
Nr ��selfs r �__str__zBaseSpecifier.__str__- � � r c � � y)zF
Returns a hash value for this Specifier-like object.
Nr r s r �__hash__zBaseSpecifier.__hash__4 r" r c � � y)z�
Returns a boolean representing whether or not the two Specifier-like
objects are equal.
:param other: The other object to check against.
Nr �r �others r �__eq__zBaseSpecifier.__eq__: r" r c � � y)z�Whether or not pre-releases as a whole are allowed.
This can be set to either ``True`` or ``False`` to explicitly enable or disable
prereleases or it can be set to ``None`` (the default) to use default semantics.
Nr r s r � prereleaseszBaseSpecifier.prereleasesC r" r c � � y)zQSetter for :attr:`prereleases`.
:param value: The value to set.
Nr �r �values r r* zBaseSpecifier.prereleasesL r" r Nc � � y)zR
Determines if the given item is contained within this specifier.
Nr )r �itemr* s r �containszBaseSpecifier.containsS r" r c � � y)z�
Takes an iterable of items and filters them so that only items which
are contained within this specifier are allowed in it.
Nr )r �iterabler* s r �filterzBaseSpecifier.filterY r" r ��return�str�r5 �int�r' �objectr5 �bool�r5 � bool | None�r- r; r5 �Noner )r/ r6 r* r= r5 r; �r2 z Iterable[UnparsedVersionVar]r* r= r5 z Iterator[UnparsedVersionVar])
r r r �abc�abstractmethodr! r$ r( �propertyr* �setterr0 r3 r r r r r , s� � ���� � � � ��� � � �
��� � � � ���� � � � � ��� � � � ��� � � �
���QU� �4� �CN� � %� � � r r )� metaclassc � � e Zd ZdZdZdZ ej dez ez dz ej ej z � Z
dddd d
d d d
d�Z d&d'd�Z e
d(d�� Zej d)d�� Ze
d*d�� Ze
d*d�� Zd*d�Zd*d�Ze
d+d�� Zd,d�Zd-d�Zd.d�Zd/d�Zd/d �Zd/d �Zd/d �Zd/d �Z d0d �Z d0d!�Z d/d"�Z d1d#�Z d2d3d$�Z! d2 d4d%�Z"y)5� Specifiera? This class abstracts handling of version specifiers.
.. tip::
It is generally not required to instantiate this manually. You should instead
prefer to work with :class:`SpecifierSet` instead, which can parse
comma-separated version specifiers (which is what package metadata contains).
z8
(?P<operator>(~=|==|!=|<=|>=|<|>|===))
a�
(?P<version>
(?:
# The identity operators allow for an escape hatch that will
# do an exact string match of the version you wish to install.
# This will not be parsed by PEP 440 and we cannot determine
# any semantic meaning from it. This operator is discouraged
# but included entirely as an escape hatch.
(?<====) # Only match for the identity operator
\s*
[^\s;)]* # The arbitrary version can be just about anything,
# we match everything except for whitespace, a
# semi-colon for marker support, and a closing paren
# since versions can be enclosed in them.
)
|
(?:
# The (non)equality operators allow for wild card and local
# versions to be specified so we have to define these two
# operators separately to enable that.
(?<===|!=) # Only match for equals and not equals
\s*
v?
(?:[0-9]+!)? # epoch
[0-9]+(?:\.[0-9]+)* # release
# You cannot use a wild card and a pre-release, post-release, a dev or
# local version together so group them with a | and make them optional.
(?:
\.\* # Wild card syntax of .*
|
(?: # pre release
[-_\.]?
(alpha|beta|preview|pre|a|b|c|rc)
[-_\.]?
[0-9]*
)?
(?: # post release
(?:-[0-9]+)|(?:[-_\.]?(post|rev|r)[-_\.]?[0-9]*)
)?
(?:[-_\.]?dev[-_\.]?[0-9]*)? # dev release
(?:\+[a-z0-9]+(?:[-_\.][a-z0-9]+)*)? # local
)?
)
|
(?:
# The compatible operator requires at least two digits in the
# release segment.
(?<=~=) # Only match for the compatible operator
\s*
v?
(?:[0-9]+!)? # epoch
[0-9]+(?:\.[0-9]+)+ # release (We have a + instead of a *)
(?: # pre release
[-_\.]?
(alpha|beta|preview|pre|a|b|c|rc)
[-_\.]?
[0-9]*
)?
(?: # post release
(?:-[0-9]+)|(?:[-_\.]?(post|rev|r)[-_\.]?[0-9]*)
)?
(?:[-_\.]?dev[-_\.]?[0-9]*)? # dev release
)
|
(?:
# All other operators only allow a sub set of what the
# (non)equality operators do. Specifically they do not allow
# local versions to be specified nor do they allow the prefix
# matching wild cards.
(?<!==|!=|~=) # We have special cases for these
# operators so we want to make sure they
# don't match here.
\s*
v?
(?:[0-9]+!)? # epoch
[0-9]+(?:\.[0-9]+)* # release
(?: # pre release
[-_\.]?
(alpha|beta|preview|pre|a|b|c|rc)
[-_\.]?
[0-9]*
)?
(?: # post release
(?:-[0-9]+)|(?:[-_\.]?(post|rev|r)[-_\.]?[0-9]*)
)?
(?:[-_\.]?dev[-_\.]?[0-9]*)? # dev release
)
)
z^\s*z\s*$�
compatible�equal� not_equal�less_than_equal�greater_than_equal� less_than� greater_than� arbitrary)�~=�==z!=�<=�>=�<�>�===Nc �� � | j j |� }|st d|��� �|j d� j � |j d� j � f| _ || _ y)a� Initialize a Specifier instance.
:param spec:
The string representation of a specifier which will be parsed and
normalized before use.
:param prereleases:
This tells the specifier if it should accept prerelease versions if
applicable or not. The default of ``None`` will autodetect it from the
given specifiers.
:raises InvalidSpecifier:
If the given specifier is invalid (i.e. bad syntax).
zInvalid specifier: �operatorr N)�_regex�searchr �group�strip�_spec� _prereleases)r �specr* �matchs r �__init__zSpecifier.__init__� sm � � � � �"�"�4�(���"�%8���#A�B� B�
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� #� )� )� +� �K�K� � "� (� (� *�'
��
� (��r c � � | j � | j S | j \ }}|dv r1|dk( r|j d� r|d d }t |� j ryy)N)rQ rS rR rP rV rU rT rQ �.*���TF)r^ r] �endswithr �
is_prerelease)r rX r s r r* zSpecifier.prereleases� sm � � � � � (��$�$� $�
!�J�J���'� �@� @� �4� �G�$4�$4�T�$:�!�#�2�,�� �w� �-�-��r c � � || _ y r �r^ r, s r r* zSpecifier.prereleases �
� � !��r c � � | j d S )z`The operator of this specifier.
>>> Specifier("==1.2.3").operator
'=='
r �r] r s r rX zSpecifier.operator � � � �z�z�!�}� r c � � | j d S )zaThe version of this specifier.
>>> Specifier("==1.2.3").version
'1.2.3'
r rk r s r r zSpecifier.version rl r c � � | j �d| j ��nd}d| j j � dt | � �|� d�S )aT A representation of the Specifier that shows all internal state.
>>> Specifier('>=1.0.0')
<Specifier('>=1.0.0')>
>>> Specifier('>=1.0.0', prereleases=False)
<Specifier('>=1.0.0', prereleases=False)>
>>> Specifier('>=1.0.0', prereleases=True)
<Specifier('>=1.0.0', prereleases=True)>
�, prereleases=� rT �(�)>)r^ r* � __class__r r6 �r �pres r �__repr__zSpecifier.__repr__& sU � � � � �,� �T� -� -� 0� 1�� � �4�>�>�*�*�+�1�S��Y�M�#��b�A�Ar c �4 � dj | j � S )z�A string representation of the Specifier that can be round-tripped.
>>> str(Specifier('>=1.0.0'))
'>=1.0.0'
>>> str(Specifier('>=1.0.0', prereleases=False))
'>=1.0.0'
z{}{})�formatr] r s r r! zSpecifier.__str__8 s � � �v�}�}�d�j�j�)�)r c �x � t | j d | j d dk7 �� }| j d |fS )Nr r rP ��strip_trailing_zero)r
r] )r �canonical_versions r �_canonical_speczSpecifier._canonical_specB s> � � 0� �J�J�q�M�!%���A� �$�!6�
�� �z�z�!�}� /�/�/r c �, � t | j � S r )�hashr} r s r r$ zSpecifier.__hash__J s � ��D�(�(�)�)r c �� � t |t � r | j t |� � }n t || j � st S | j
|j
k( S # t $ r t cY S w xY w)a> Whether or not the two Specifier-like objects are equal.
:param other: The other object to check against.
The value of :attr:`prereleases` is ignored.
>>> Specifier("==1.2.3") == Specifier("== 1.2.3.0")
True
>>> (Specifier("==1.2.3", prereleases=False) ==
... Specifier("==1.2.3", prereleases=True))
True
>>> Specifier("==1.2.3") == "==1.2.3"
True
>>> Specifier("==1.2.3") == Specifier("==1.2.4")
False
>>> Specifier("==1.2.3") == Specifier("~=1.2.3")
False
)r r6 rs r �NotImplementedr} r& s r r( zSpecifier.__eq__M si � �& �e�S� !�
&� ���s�5�z�2�� �E�4�>�>�2�!� !��#�#�u�'<�'<�<�<�� $�
&�%�%�
&�s �A" �"A4�3A4c �> � t | d| j | � �� }|S )N� _compare_)�getattr�
_operators)r �op�operator_callables r �
_get_operatorzSpecifier._get_operatorj s+ � �.5� �I�d�o�o�b� 1� 2�3�/
�� !� r c
�� � t t t j t t |� � � d d � }|dz
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_version_join�list� itertools� takewhile�_is_not_suffix�_version_splitr� )r � prospectiver_ �prefixs r �_compare_compatiblez Specifier._compare_compatiblep sw � � � ��$�$�^�^�D�5I�J� K�C�R� P�
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�$���'�t�!�!�$�'� �T�:�
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|
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k( S )Nrc Frz rd )re r
�publicr� � _pad_version�lenr �local) r r� r_ �normalized_prospective�normalized_spec�
split_spec�split_prospective�padded_prospective�_�shortened_prospective� spec_versions r �_compare_equalzSpecifier._compare_equal� s� � � �=�=�� �%9��"�"��&� "� 3�4���9�RW� X�O� (��8�J�
!/�/E� F� � %1�1B�J�$O� !� ��
%7�7H��Z� �$I� !�(�J�6� 6� #�4�=�L�
�%�%� %�k�&8�&8� 9� � �,�.� .r c �( � | j ||� S r )r� �r r� r_ s r �_compare_not_equalz Specifier._compare_not_equal� s � ��&�&�{�D�9�9�9r c �D � t |j � t |� k S r �r r� r� s r �_compare_less_than_equalz"Specifier._compare_less_than_equal� � � � �{�)�)�*�g�d�m�;�;r c �D � t |j � t |� k\ S r r� r� s r �_compare_greater_than_equalz%Specifier._compare_greater_than_equal� r� r c � � t |� }||k sy|j s8|j r,t |j � t |j � k( ryy�NFT)r rf � base_version�r r� �spec_strr_ s r �_compare_less_thanz Specifier._compare_less_than� sT � � �x� ��
�T�!�� �!�!�k�&?�&?��{�/�/�0�G�D�<M�<M�4N�N� �
r c � � t |� }||kD sy|j s8|j r,t |j � t |j � k( ry|j �,t |j � t |j � k( ryyr� )r �is_postreleaser� r� r� s r �_compare_greater_thanz Specifier._compare_greater_than� s� � � �x� ��
�T�!�� �"�"�{�'A�'A��{�/�/�0�G�D�<M�<M�4N�N� � � � � (��{�/�/�0�G�D�<M�<M�4N�N� �
r c �h � t |� j � t |� j � k( S r )r6 �lowerr� s r �_compare_arbitraryz Specifier._compare_arbitrary� s& � ��;� �%�%�'�3�t�9�?�?�+<�<�<r c �$ � | j |� S )a; Return whether or not the item is contained in this specifier.
:param item: The item to check for.
This is used for the ``in`` operator and behaves the same as
:meth:`contains` with no ``prereleases`` argument passed.
>>> "1.2.3" in Specifier(">=1.2.3")
True
>>> Version("1.2.3") in Specifier(">=1.2.3")
True
>>> "1.0.0" in Specifier(">=1.2.3")
False
>>> "1.3.0a1" in Specifier(">=1.2.3")
False
>>> "1.3.0a1" in Specifier(">=1.2.3", prereleases=True)
True
�r0 �r r/ s r � __contains__zSpecifier.__contains__� � � �& �}�}�T�"�"r c � � |� | j }t |� }|j r|sy| j | j � } ||| j
� S )al Return whether or not the item is contained in this specifier.
:param item:
The item to check for, which can be a version string or a
:class:`Version` instance.
:param prereleases:
Whether or not to match prereleases with this Specifier. If set to
``None`` (the default), it uses :attr:`prereleases` to determine
whether or not prereleases are allowed.
>>> Specifier(">=1.2.3").contains("1.2.3")
True
>>> Specifier(">=1.2.3").contains(Version("1.2.3"))
True
>>> Specifier(">=1.2.3").contains("1.0.0")
False
>>> Specifier(">=1.2.3").contains("1.3.0a1")
False
>>> Specifier(">=1.2.3", prereleases=True).contains("1.3.0a1")
True
>>> Specifier(">=1.2.3").contains("1.3.0a1", prereleases=True)
True
F)r* r rf r� rX r )r r/ r* �normalized_itemr� s r r0 zSpecifier.contains sY � �4 � � �*�*�K� *�$�/��
� (� (��� /3�.@�.@�� � �.O�� � �$�,�,�?�?r c # � K � d}g }d|�|ndi}|D ]S }t |� } | j |fi |��s�"|j r |s | j s|j |� �Nd}|�� �U |s|r |D ] }|�� � yyy�w)aO Filter items in the given iterable, that match the specifier.
:param iterable:
An iterable that can contain version strings and :class:`Version` instances.
The items in the iterable will be filtered according to the specifier.
:param prereleases:
Whether or not to allow prereleases in the returned iterator. If set to
``None`` (the default), it will be intelligently decide whether to allow
prereleases or not (based on the :attr:`prereleases` attribute, and
whether the only versions matching are prereleases).
This method is smarter than just ``filter(Specifier().contains, [...])``
because it implements the rule from :pep:`440` that a prerelease item
SHOULD be accepted if no other versions match the given specifier.
>>> list(Specifier(">=1.2.3").filter(["1.2", "1.3", "1.5a1"]))
['1.3']
>>> list(Specifier(">=1.2.3").filter(["1.2", "1.2.3", "1.3", Version("1.4")]))
['1.2.3', '1.3', <Version('1.4')>]
>>> list(Specifier(">=1.2.3").filter(["1.2", "1.5a1"]))
['1.5a1']
>>> list(Specifier(">=1.2.3").filter(["1.3", "1.5a1"], prereleases=True))
['1.3', '1.5a1']
>>> list(Specifier(">=1.2.3", prereleases=True).filter(["1.3", "1.5a1"]))
['1.3', '1.5a1']
Fr* NT)r r0 rf r* �append)r r2 r* �yielded�found_prereleases�kwr �parsed_versions r r3 zSpecifier.filter5 s� � �� �< �� ���K�,C�[��
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str | Versionr5 r; r )r/ �UnparsedVersionr* r= r5 r; r@ )#r r r r �_operator_regex_str�_version_regex_str�re�compile�VERBOSE�
IGNORECASErY r� ra rC r* rD rX r rv r! r} r$ r( r� r� r� r� r� r� r� r� r� r� r0 r3 r r r rG rG c sR � �� ��\ ��| �R�Z�Z��%�%�(:�:�W�D�
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�(&/�P:�<� <� �0 �<=�#�**@�Z RV�; �4�; �CN�; � %�; r rG z ^([0-9]+)((?:a|b|c|rc)[0-9]+)$c � � g }| j d� \ }}}|j |xs d� |j d� D ]J }t j |� }|r |j |j
� � �:|j |� �L |S )a Split version into components.
The split components are intended for version comparison. The logic does
not attempt to retain the original version string, so joining the
components back with :func:`_version_join` may not produce the original
version string.
�!�0�.)�
rpartitionr� �split�
_prefix_regexrZ �extend�groups)r �result�epochr� �restr/ r` s r r� r� v sy � � �F� �'�'��,�N�E�1�d�
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�3��� �$�$�T�*�� � �M�M�%�,�,�.� )� �M�M�$� � � �Mr c �6 � | ^}}|� ddj |� � �S )z�Join split version components into a version string.
This function assumes the input came from :func:`_version_split`, where the
first component must be the epoch (either empty or numeric), and all other
components numeric.
r� r� )�join)�
componentsr� r� s r r� r� � s' � � �L�E�D��W�A�c�h�h�t�n�%� &�&r c �. � � t � fd�dD � � S )Nc 3 �@ �K � | ] }�j |� �� � y �wr )�
startswith)�.0r� �segments �r � <genexpr>z!_is_not_suffix.<locals>.<genexpr>� s! �� �� � �1P�v����6�"�1P�s � )�dev�a�b�rc�post)�any)r� s `r r� r� � s" �� �� �1P�� � � r c �� � g g }}|j t t j d� | � � � |j t t j d� |� � � |j | t |d � d � |j |t |d � d � |j ddgt
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� z � t t j j |� � t t j j |� � fS )Nc �" � | j � S r ��isdigit��xs r �<lambda>z _pad_version.<locals>.<lambda>� s
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left_split� right_splits r r� r� � s5 � � �"� �J� ���d�9�.�.�/D�d�K�L�M����t�I� /� /�0E�u� M�N�O� ���d�3�z�!�}�-�/�0�1����u�S��Q� � 0� 2�3�4� ���a�#���Q��K��N�(;�c�*�Q�-�>P�(P�!Q�Q�R����q�3�%�#�a��Z��]�);�c�+�a�.�>Q�)Q�"R�R�S�
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�Z d dd�Z d d d�Zy) � SpecifierSetz�This class abstracts handling of a set of version specifiers.
It can be passed a single specifier (``>=3.0``), a comma-separated list of
specifiers (``>=3.0,!=3.1``), or no specifier at all.
Nc �" � t |t � rc|j d� D �cg c]# }|j � s�|j � ��% }}t t t |� � | _ || _ yt |� | _ || _ yc c}w )a� Initialize a SpecifierSet instance.
:param specifiers:
The string representation of a specifier or a comma-separated list of
specifiers which will be parsed and normalized before use.
May also be an iterable of ``Specifier`` instances, which will be used
as is.
:param prereleases:
This tells the SpecifierSet if it should accept prerelease versions if
applicable or not. The default of ``None`` will autodetect it from the
given specifiers.
:raises InvalidSpecifier:
If the given ``specifiers`` are not parseable than this exception will be
raised.
�,N) r r6 r� r\ � frozenset�maprG �_specsr^ )r �
specifiersr* �s�split_specifierss r ra zSpecifierSet.__init__� s~ � �, �j�#� &� 4>�3C�3C�C�3H� V�3H�a�A�G�G�I���� �3H� � V� $�C� �3C�$D�E�D�K� (��� $�J�/�D�K� (���� Ws
�B �B c � � | j � | j S | j sy t d� | j D � � S )Nc 3 �4 K � | ] }|j �� � y �wr �r* �r� r s r r� z+SpecifierSet.prereleases.<locals>.<genexpr>� s � �� �6�+�Q�1�=�=�+�s �)r^ r� r� r s r r* zSpecifierSet.prereleases� s? � � � � � (��$�$� $�
�{�{�� �6�$�+�+�6�6�6r c � � || _ y r rh r, s r r* zSpecifierSet.prereleases� ri r c �^ � | j �d| j ��nd}dt | � �|� d�S )a A representation of the specifier set that shows all internal state.
Note that the ordering of the individual specifiers within the set may not
match the input string.
>>> SpecifierSet('>=1.0.0,!=2.0.0')
<SpecifierSet('!=2.0.0,>=1.0.0')>
>>> SpecifierSet('>=1.0.0,!=2.0.0', prereleases=False)
<SpecifierSet('!=2.0.0,>=1.0.0', prereleases=False)>
>>> SpecifierSet('>=1.0.0,!=2.0.0', prereleases=True)
<SpecifierSet('!=2.0.0,>=1.0.0', prereleases=True)>
ro rp z<SpecifierSet(rr )r^ r* r6 rt s r rv zSpecifierSet.__repr__� sD � � � � �,� �T� -� -� 0� 1�� � ��D� �}�S�E��4�4r c �X � dj t d� | j D � � � S )an A string representation of the specifier set that can be round-tripped.
Note that the ordering of the individual specifiers within the set may not
match the input string.
>>> str(SpecifierSet(">=1.0.0,!=1.0.1"))
'!=1.0.1,>=1.0.0'
>>> str(SpecifierSet(">=1.0.0,!=1.0.1", prereleases=False))
'!=1.0.1,>=1.0.0'
r� c 3 �2 K � | ] }t |� �� � y �wr )r6 r s r r� z'SpecifierSet.__str__.<locals>.<genexpr> s � �� � ;�{�!�s�1�v�{�s �)r� �sortedr� r s r r! zSpecifierSet.__str__ s" � � �x�x�� ;�t�{�{� ;�;�<�<r c �, � t | j � S r )r r� r s r r$ zSpecifierSet.__hash__ s � ��D�K�K� � r c �� � t |t � r t |� }nt |t � st S t � }t | j
|j
z � |_ | j � |j �|j |_ |S | j � |j �| j |_ |S | j |j k( r| j |_ |S t d� �)a� Return a SpecifierSet which is a combination of the two sets.
:param other: The other object to combine with.
>>> SpecifierSet(">=1.0.0,!=1.0.1") & '<=2.0.0,!=2.0.1'
<SpecifierSet('!=1.0.1,!=2.0.1,<=2.0.0,>=1.0.0')>
>>> SpecifierSet(">=1.0.0,!=1.0.1") & SpecifierSet('<=2.0.0,!=2.0.1')
<SpecifierSet('!=1.0.1,!=2.0.1,<=2.0.0,>=1.0.0')>
zFCannot combine SpecifierSets with True and False prerelease overrides.)r r6 r� r� r� r� r^ �
ValueError)r r' � specifiers r �__and__zSpecifierSet.__and__ s� � � �e�S� !� ��'�E��E�<�0�!� !� �N� �$�T�[�[�5�<�<�%?�@� �� � � � $��);�);�)G�%*�%7�%7�I� "� �� �
�
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k( S )a� Whether or not the two SpecifierSet-like objects are equal.
:param other: The other object to check against.
The value of :attr:`prereleases` is ignored.
>>> SpecifierSet(">=1.0.0,!=1.0.1") == SpecifierSet(">=1.0.0,!=1.0.1")
True
>>> (SpecifierSet(">=1.0.0,!=1.0.1", prereleases=False) ==
... SpecifierSet(">=1.0.0,!=1.0.1", prereleases=True))
True
>>> SpecifierSet(">=1.0.0,!=1.0.1") == ">=1.0.0,!=1.0.1"
True
>>> SpecifierSet(">=1.0.0,!=1.0.1") == SpecifierSet(">=1.0.0")
False
>>> SpecifierSet(">=1.0.0,!=1.0.1") == SpecifierSet(">=1.0.0,!=1.0.2")
False
)r r6 rG r� r� r� r& s r r( zSpecifierSet.__eq__8 sD � �& �e�c�9� -� .� ��U��,�E��E�<�0�!� !��{�{�e�l�l�*�*r c �, � t | j � S )z7Returns the number of specifiers in this specifier set.)r� r� r s r �__len__zSpecifierSet.__len__R s � ��4�;�;� � r c �, � t | j � S )z�
Returns an iterator over all the underlying :class:`Specifier` instances
in this specifier set.
>>> sorted(SpecifierSet(">=1.0.0,!=1.0.1"), key=str)
[<Specifier('!=1.0.1')>, <Specifier('>=1.0.0')>]
)�iterr� r s r �__iter__zSpecifierSet.__iter__V s � � �D�K�K� � r c �$ � | j |� S )ar Return whether or not the item is contained in this specifier.
:param item: The item to check for.
This is used for the ``in`` operator and behaves the same as
:meth:`contains` with no ``prereleases`` argument passed.
>>> "1.2.3" in SpecifierSet(">=1.0.0,!=1.0.1")
True
>>> Version("1.2.3") in SpecifierSet(">=1.0.0,!=1.0.1")
True
>>> "1.0.1" in SpecifierSet(">=1.0.0,!=1.0.1")
False
>>> "1.3.0a1" in SpecifierSet(">=1.0.0,!=1.0.1")
False
>>> "1.3.0a1" in SpecifierSet(">=1.0.0,!=1.0.1", prereleases=True)
True
r� r� s r r� zSpecifierSet.__contains__` r� r c � ��� t �t � s t �� ��� | j ��s
�j ry|r!�j rt �j � �t ��fd�| j D � � S )a� Return whether or not the item is contained in this SpecifierSet.
:param item:
The item to check for, which can be a version string or a
:class:`Version` instance.
:param prereleases:
Whether or not to match prereleases with this SpecifierSet. If set to
``None`` (the default), it uses :attr:`prereleases` to determine
whether or not prereleases are allowed.
>>> SpecifierSet(">=1.0.0,!=1.0.1").contains("1.2.3")
True
>>> SpecifierSet(">=1.0.0,!=1.0.1").contains(Version("1.2.3"))
True
>>> SpecifierSet(">=1.0.0,!=1.0.1").contains("1.0.1")
False
>>> SpecifierSet(">=1.0.0,!=1.0.1").contains("1.3.0a1")
False
>>> SpecifierSet(">=1.0.0,!=1.0.1", prereleases=True).contains("1.3.0a1")
True
>>> SpecifierSet(">=1.0.0,!=1.0.1").contains("1.3.0a1", prereleases=True)
True
Fc 3 �D �K � | ] }|j ��� � �� � y�w)r Nr� )r� r r/ r* s ��r r� z(SpecifierSet.contains.<locals>.<genexpr>� s �� �� �R�k��1�:�:�d� �:�<�k�s � )r r r* rf r� �allr� )r r/ r* � installeds `` r r0 zSpecifierSet.containsu sm �� �< �$��(��4�=�D�
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|� t |� S t |� S )a. Filter items in the given iterable, that match the specifiers in this set.
:param iterable:
An iterable that can contain version strings and :class:`Version` instances.
The items in the iterable will be filtered according to the specifier.
:param prereleases:
Whether or not to allow prereleases in the returned iterator. If set to
``None`` (the default), it will be intelligently decide whether to allow
prereleases or not (based on the :attr:`prereleases` attribute, and
whether the only versions matching are prereleases).
This method is smarter than just ``filter(SpecifierSet(...).contains, [...])``
because it implements the rule from :pep:`440` that a prerelease item
SHOULD be accepted if no other versions match the given specifier.
>>> list(SpecifierSet(">=1.2.3").filter(["1.2", "1.3", "1.5a1"]))
['1.3']
>>> list(SpecifierSet(">=1.2.3").filter(["1.2", "1.3", Version("1.4")]))
['1.3', <Version('1.4')>]
>>> list(SpecifierSet(">=1.2.3").filter(["1.2", "1.5a1"]))
[]
>>> list(SpecifierSet(">=1.2.3").filter(["1.3", "1.5a1"], prereleases=True))
['1.3', '1.5a1']
>>> list(SpecifierSet(">=1.2.3", prereleases=True).filter(["1.3", "1.5a1"]))
['1.3', '1.5a1']
An "empty" SpecifierSet will filter items based on the presence of prerelease
versions in the set.
>>> list(SpecifierSet("").filter(["1.3", "1.5a1"]))
['1.3']
>>> list(SpecifierSet("").filter(["1.5a1"]))
['1.5a1']
>>> list(SpecifierSet("", prereleases=True).filter(["1.3", "1.5a1"]))
['1.3', '1.5a1']
>>> list(SpecifierSet("").filter(["1.3", "1.5a1"], prereleases=True))
['1.3', '1.5a1']
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