This module supports asynchronous I/O on multiple file descriptors.

\py385\DLLs\select.pyd
# by generator 1.147
"""
This module supports asynchronous I/O on multiple file descriptors.

*** IMPORTANT NOTICE ***
On Windows, only sockets are supported; on Unix, all file descriptors.
"""
# no imports

# functions

def select(*args, **kwargs): # real signature unknown
    """
    Wait until one or more file descriptors are ready for some kind of I/O.
    
    The first three arguments are iterables of file descriptors to be waited for:
    rlist -- wait until ready for reading
    wlist -- wait until ready for writing
    xlist -- wait for an "exceptional condition"
    If only one kind of condition is required, pass [] for the other lists.
    
    A file descriptor is either a socket or file object, or a small integer
    gotten from a fileno() method call on one of those.
    
    The optional 4th argument specifies a timeout in seconds; it may be
    a floating point number to specify fractions of seconds.  If it is absent
    or None, the call will never time out.
    
    The return value is a tuple of three lists corresponding to the first three
    arguments; each contains the subset of the corresponding file descriptors
    that are ready.
    
    *** IMPORTANT NOTICE ***
    On Windows, only sockets are supported; on Unix, all file
    descriptors can be used.
    """
    pass