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� � � fdd�t| �D �} t| ||� �E dH S )a� Wait for the Futures and coroutines given by fs to complete.
The sequence futures must not be empty.
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� r�| j� S | j |� | j � t j� �W d|j � X dS )a� Wait for the single Future or coroutine to complete, with timeout.
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� � q�W �r�|dk rʈj||��x tt���D ] }|� V q�W dS )am Return an iterator whose values are coroutines.
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for f in as_completed(fs):
result = yield from f # The 'yield from' may raise.
# Use result.
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|E dH S |j� X dS )z9Coroutine that completes after a given time (in seconds).r N)r r ri r rj r Z _set_result_unless_cancelledr= )ZdelayrQ r rR �hr r r r � s
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done successfully, the returned future's result is the list of
results (in the order of the original sequence, not necessarily
the order of results arrival). If *return_exceptions* is True,
exceptions in the tasks are treated the same as successful
results, and gathered in the result list; otherwise, the first
raised exception will be immediately propagated to the returned
future.
Cancellation: if the outer Future is cancelled, all children (that
have not completed yet) are also cancelled. If any child is
cancelled, this is treated as if it raised CancelledError --
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res = yield from something()
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something(), the cancellation did not happen. But its caller is
still cancelled, so the yield-from expression still raises
CancelledError. Note: If something() is cancelled by other means
this will still cancel shield().
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try:
res = yield from shield(something())
except CancelledError:
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)r c s\ � j � r | j � s| j� d S | j � r.� j� n*| j� }|d k rJ� j|� n� j| j� � d S )N)rr rs r= rD rE rQ )�innerrP )r� r r r� � s
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