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Parse the given version string and return either a :class:`Version` object
or a :class:`LegacyVersion` object depending on if the given version is
a valid PEP 440 version or a legacy version.
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zLegacyVersion.__init__c C s | j S )N)r. )r r r r �__str__N s zLegacyVersion.__str__c C s dj tt| ���S )Nz<LegacyVersion({0})>)�format�reprr- )r r r r �__repr__Q s zLegacyVersion.__repr__c C s | j S )N)r. )r r r r �publicT s zLegacyVersion.publicc C s | j S )N)r. )r r r r � base_versionX s zLegacyVersion.base_versionc C s d S )Nr )r r r r r \ s zLegacyVersion.localc C s dS )NFr )r r r r �
is_prerelease` s zLegacyVersion.is_prereleasec C s dS )NFr )r r r r �is_postreleased s z LegacyVersion.is_postreleaseN) r r r r0 r1 r4 �propertyr5 r6 r r7 r8 r r r r r H s z(\d+ | [a-z]+ | \.| -)�czfinal-�@)r �preview�-�rcr c c sb xVt j| �D ]H}tj||�}| s |dkr,q |d d� dkrJ|jd�V q d| V q W dV d S )N�.r �
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(?P<pre> # pre-release
[-_\.]?
(?P<pre_l>(a|b|c|rc|alpha|beta|pre|preview))
[-_\.]?
(?P<pre_n>[0-9]+)?
)?
(?P<post> # post release
(?:-(?P<post_n1>[0-9]+))
|
(?:
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r c s s | ]}t |�V qd S )N)�int)�.0�ir r r � <genexpr>� s z#Version.__init__.<locals>.<genexpr>r r? Zpre_lZpre_nZpost_lZpost_n1Zpost_n2Zdev_lZdev_nr )r
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Takes a string like abc.1.twelve and turns it into ("abc", 1, "twelve").
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