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_AS_COMPLETEDPENDINGRUNNING CANCELLEDCANCELLED_AND_NOTIFIEDFINISHEDpendingrunning cancelledfinishedzconcurrent.futuresc @ s e Zd ZdZdS )Errorz-Base class for all future-related exceptions.N)__name__
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s0 | j tt| j| | jj W d Q R X d S )N)r& r$ r# r! r r( )r r )r' r r r! S s z _AsCompletedWaiter.add_exceptionc
s0 | j tt| j| | jj W d Q R X d S )N)r& r$ r# r" r r( )r r )r' r r r" X s z _AsCompletedWaiter.add_cancelled) r r r r r r r! r"
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rE c c sX xR| rR| d }x|D ]}|j | qW |j |jj | W dQ R X ~| j V qW dS )a~
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j W dQ R X |j t||| |fdE dH q~W W dx,| D ]$}|j |jj| W dQ R X q W X dS )an An iterator over the given futures that yields each as it completes.
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Returns:
An iterator that yields the given Futures as they complete (finished or
cancelled). If any given Futures are duplicated, they will be returned
once.
Raises:
TimeoutError: If the entire result iterator could not be generated
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Nc s s | ]}|j ttgkr|V qd S )N)r; r r
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return_when: Indicates when this function should return. The options
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FIRST_COMPLETED - Return when any future finishes or is
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FIRST_EXCEPTION - Return when any future finishes by raising an
exception. If no future raises an exception
then it is equivalent to ALL_COMPLETED.
ALL_COMPLETED - Return when all futures finish or are cancelled.
Returns:
A named 2-tuple of sets. The first set, named 'done', contains the
futures that completed (is finished or cancelled) before the wait
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futures.
c s s | ]}|j ttgkr|V qd S )N)r; r r
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zFuture._invoke_callbacksc C s | j v | jtkr`| jrz <%s at %#x state=%s returned %s>z<%s at %#x state=%s>) r5 r; r
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C sR | j : | jttgkrdS | jttgkr,dS t| _| j j W dQ R X | j dS )zCancel the future if possible.
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C s | j | jttgkS Q R X dS )z(Return True if the future was cancelled.N)r5 r; r r )r r r r r
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)r r r r rY y s z Future.donec C s | j r| j n| jS d S )N)r\ r[ )r r r r Z __get_result~ s zFuture.__get_resultc C s> | j & | jtttgkr(| jj| dS W dQ R X || dS )a% Attaches a callable that will be called when the future finishes.
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argument when the future completes or is cancelled. The callable
will always be called by a thread in the same process in which
it was added. If the future has already completed or been
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N)r5 r; r r r
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C sx | j h | jttgkr t n| jtkr0| j S | j j| | jttgkrRt n| jtkrd| j S t W dQ R X dS )aB Return the result of the call that the future represents.
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CancelledError: If the future was cancelled.
TimeoutError: If the future didn't finish executing before the given
timeout.
Exception: If the call raised then that exception will be raised.
N) r5 r; r r r r
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C st | j d | jttgkr t n| jtkr.| jS | j j| | jttgkrPt n| jtkr`| jS t W dQ R X dS )aU Return the exception raised by the call that the future represents.
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future isn't done. If None, then there is no limit on the wait
time.
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if the call completed without raising.
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TimeoutError: If the future didn't finish executing before the given
timeout.
N) r5 r; r r r r
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zFuture.exceptionc C st | j d | jtkr6t| _x| jD ]}|j| q W dS | jtkrJt| _dS tj dt
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True) then any threads waiting on the future completing (though calls
to as_completed() or wait()) are notified and False is returned.
If the future was not cancelled then it is put in the running state
(future calls to running() will return True) and True is returned.
This method should be called by Executor implementations before
executing the work associated with this future. If this method returns
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or set_exception() was called.
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C sN | j 6 || _t| _x| jD ]}|j| q W | j j W dQ R X | j dS )zSets the result of the future as being the given exception.
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chunksize: The size of the chunks the iterable will be broken into
before being passed to a child process. This argument is only
used by ProcessPoolExecutor; it is ignored by
ThreadPoolExecutor.
Returns:
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before the given timeout.
Exception: If fn(*args) raises for any values.
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z%Executor.map..result_iterator)rK rL zip)r rf rR rr iterablesrt r )rS rf rB r rR r map& s
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It is safe to call this method several times. Otherwise, no other
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executor have been reclaimed.
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