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_common.cpython-39.pyc
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a &�i�2 � @ s� d dl mZ d dlmZ d dlmZmZmZ ed �ZddgZdd� Z e ed�rZdd d�Z nG d d � d e�Z dd d�Z d d� Z G dd� de�ZG dd� de�ZdS )� )�PY2��wraps)�datetime� timedelta�tzinfo�tzname_in_python2�enfoldc s$ t r t� �� fdd��}|S � S dS )z�Change unicode output into bytestrings in Python 2 tzname() API changed in Python 3. It used to return bytes, but was changed to unicode strings c s" � | i |��}|d ur |� � }|S �N)�encode)�args�kwargs�name��namefunc� �7/usr/lib/python3.9/site-packages/dateutil/tz/_common.py�adjust_encoding s z*tzname_in_python2.<locals>.adjust_encodingN)r r )r r r r r r s �fold� c C s | j |d�S )� Provides a unified interface for assigning the ``fold`` attribute to datetimes both before and after the implementation of PEP-495. :param fold: The value for the ``fold`` attribute in the returned datetime. This should be either 0 or 1. :return: Returns an object for which ``getattr(dt, 'fold', 0)`` returns ``fold`` for all versions of Python. In versions prior to Python 3.6, this is a ``_DatetimeWithFold`` object, which is a subclass of :py:class:`datetime.datetime` with the ``fold`` attribute added, if ``fold`` is 1. .. versionadded:: 2.6.0 �r ��replace)�dtr r r r r % s c @ s( e Zd ZdZdZdd� Zedd� �ZdS )�_DatetimeWithFoldz� This is a class designed to provide a PEP 495-compliant interface for Python versions before 3.6. It is used only for dates in a fold, so the ``fold`` attribute is fixed at ``1``. .. versionadded:: 2.6.0 r c O sz d}t ||�D ]&\}}||v r,td�|���|||< q|D ]}||vr:t| |�||< q:|�dd�rh| jnt}|f i |��S )a� Return a datetime with the same attributes, except for those attributes given new values by whichever keyword arguments are specified. Note that tzinfo=None can be specified to create a naive datetime from an aware datetime with no conversion of date and time data. This is reimplemented in ``_DatetimeWithFold`` because pypy3 will return a ``datetime.datetime`` even if ``fold`` is unchanged. )�yearZmonthZdayZhourZminute�second� microsecondr zDuplicate argument: {}r r )�zip� TypeError�format�getattr�get� __class__r )�selfr r Zargnames�arg�argnameZdt_classr r r r D s z_DatetimeWithFold.replacec C s dS )Nr r �r% r r r r b s z_DatetimeWithFold.foldN)�__name__� __module__� __qualname__�__doc__� __slots__r �propertyr r r r r r : s r c C sL t | dd�|kr| S | �� dd� }|| j| jf7 }|r@t|� S t|� S dS )r r r N� )r" Z timetupler r r r )r r r r r r r f s c s t � �� fdd��}|S )z� The CPython version of ``fromutc`` checks that the input is a ``datetime`` object and that ``self`` is attached as its ``tzinfo``. c s. t |t�std��|j| ur$td��� | |�S )N�&fromutc() requires a datetime argument�dt.tzinfo is not self)� isinstancer r r � ValueError�r% r ��fr r �fromutc� s z)_validate_fromutc_inputs.<locals>.fromutcr )r6 r7 r r5 r �_validate_fromutc_inputs� s r8 c @ s< e Zd ZdZdd� Zdd� Zdd� Zdd � Zed d � �Z d S ) �_tzinfoz= Base class for all ``dateutil`` ``tzinfo`` objects. c C sV |j | d�}t|dd�}t|dd�}|�� |�� k}|j dd�|j dd�k}|oT| S )�6 Whether or not the "wall time" of a given datetime is ambiguous in this zone. :param dt: A :py:class:`datetime.datetime`, naive or time zone aware. :return: Returns ``True`` if ambiguous, ``False`` otherwise. .. versionadded:: 2.6.0 �r r r r N)r r � utcoffset)r% r Zwall_0Zwall_1Z same_offsetZsame_dtr r r � is_ambiguous� s z_tzinfo.is_ambiguousc C s4 | � |�r,|| }t||�� |�� k�}nd}|S )a� Determine the fold status of a "wall" datetime, given a representation of the same datetime as a (naive) UTC datetime. This is calculated based on the assumption that ``dt.utcoffset() - dt.dst()`` is constant for all datetimes, and that this offset is the actual number of hours separating ``dt_utc`` and ``dt_wall``. :param dt_utc: Representation of the datetime as UTC :param dt_wall: Representation of the datetime as "wall time". This parameter must either have a `fold` attribute or have a fold-naive :class:`datetime.tzinfo` attached, otherwise the calculation may fail. r )r= �intr< �dst)r% �dt_utc�dt_wallZ delta_wall�_foldr r r � _fold_status� s z_tzinfo._fold_statusc C s t |dd�S )Nr r )r" r4 r r r rB � s z _tzinfo._foldc C sh |� � }|du rtd��|�� }|du r0td��|| }||7 }t|dd��� }|du r`td��|| S )� Given a timezone-aware datetime in a given timezone, calculates a timezone-aware datetime in a new timezone. Since this is the one time that we *know* we have an unambiguous datetime object, we take this opportunity to determine whether the datetime is ambiguous and in a "fold" state (e.g. if it's the first occurrence, chronologically, of the ambiguous datetime). :param dt: A timezone-aware :class:`datetime.datetime` object. Nz0fromutc() requires a non-None utcoffset() resultz*fromutc() requires a non-None dst() resultr r z;fromutc(): dt.dst gave inconsistent results; cannot convert)r< r3 r? r )r% r ZdtoffZdtdstZdeltar r r �_fromutc� s z_tzinfo._fromutcc C s" | � |�}| �||�}t||d�S )rD r )rE rC r )r% r rA rB r r r r7 � s z_tzinfo.fromutcN) r) r* r+ r, r= rC rB rE r8 r7 r r r r r9 � s %r9 c @ sz e Zd ZdZdd� Zdd� Zdd� Zedd � �Zd d � Z d d � Z dd� Z dd� Z e dd� �ZdZdd� Zdd� ZejZdS )� tzrangebasea� This is an abstract base class for time zones represented by an annual transition into and out of DST. Child classes should implement the following methods: * ``__init__(self, *args, **kwargs)`` * ``transitions(self, year)`` - this is expected to return a tuple of datetimes representing the DST on and off transitions in standard time. A fully initialized ``tzrangebase`` subclass should also provide the following attributes: * ``hasdst``: Boolean whether or not the zone uses DST. * ``_dst_offset`` / ``_std_offset``: :class:`datetime.timedelta` objects representing the respective UTC offsets. * ``_dst_abbr`` / ``_std_abbr``: Strings representing the timezone short abbreviations in DST and STD, respectively. * ``_hasdst``: Whether or not the zone has DST. .. versionadded:: 2.6.0 c C s t d��d S )Nz%tzrangebase is an abstract base class)�NotImplementedErrorr( r r r �__init__! s ztzrangebase.__init__c C s* | � |�}|d u rd S |r | jS | jS d S r )�_isdst� _dst_offset� _std_offset�r% r �isdstr r r r< $ s ztzrangebase.utcoffsetc C s( | � |�}|d u rd S |r | jS tS d S r )rI �_dst_base_offset�ZEROrL r r r r? . s ztzrangebase.dstc C s | � |�r| jS | jS d S r )rI Z _dst_abbrZ _std_abbrr4 r r r �tzname8 s ztzrangebase.tznamec C s� t |t�std��|j| ur$td��| �|j�}|du rF|| �|� S |\}}|| j8 }|| j8 }||f}|j dd�}| � ||�}|r�|| j }n || j }t | o�| � |��} t|| d�S )z, Given a datetime in UTC, return local time r0 r1 Nr; r )r2 r r r r3 � transitionsr r< rK r � _naive_isdstrJ r> r= r ) r% r rQ �dston�dstoffZutc_transitionsr@ rM rA rB r r r r7 ? s$ ztzrangebase.fromutcc C sD | j s dS | �|j�\}}|jdd�}|| ko>|| j k S S )r: FNr; )�hasdstrQ r r rN )r% r �start�endr r r r= ` s ztzrangebase.is_ambiguousc C sh | j s dS |d u rd S | �|j�}|d u r.dS |jd d�}| �||�}|s`| �|�r`| �|� S |S d S )NFr; )rU rQ r r rR r= rB )r% r rQ rM r r r rI v s ztzrangebase._isdstc C sT |\}}|j d d�}||k r6|| ko.|k n }n|| koH|k n }|S )Nr; r )r% r rQ rS rT rM r r r rR � s ztzrangebase._naive_isdstc C s | j | j S r )rJ rK r( r r r rN � s z tzrangebase._dst_base_offsetNc C s | |k S r r )r% �otherr r r �__ne__� s ztzrangebase.__ne__c C s d| j j S )Nz%s(...))r$ r) r( r r r �__repr__� s ztzrangebase.__repr__)r) r* r+ r, rH r< r? r rP r7 r= rI rR r. rN �__hash__rY rZ �object� __reduce__r r r r rF s ! rF N)r )r )Zsixr � functoolsr r r r rO �__all__r �hasattrr r r8 r9 rF r r r r �<module> s , v