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Create inspect introspection functions for asyncgen.
```py
ASYNCGEN_CREATED = 'ASYNCGEN_CREATED'
ASYNCGEN_RUNNING = 'ASYNCGEN_RUNNING'
ASYNCGEN_SUSPENDED = 'ASYNCGEN_SUSPENDED'
ASYNCGEN_CLOSED = 'ASYNCGEN_CLOSED'
def getasyncgeneratorstate(asyncgenerator):
 """Get current state of a async generator-iterator.
 Possible states are:
 ASYNCGEN_CREATED: Waiting to start execution.
 ASYNCGEN_RUNNING: Currently being executed by the interpreter.
 ASYNCGEN_SUSPENDED: Currently suspended at a yield expression.
 ASYNCGEN_CLOSED: Execution has completed.
 """
 if asyncgenerator.ag_running:
 return ASYNCGEN_RUNNING
 if asyncgenerator.ag_frame is None:
 return ASYNCGEN_CLOSED
 if asyncgenerator.ag_frame.f_lasti == -1:
 return ASYNCGEN_CREATED
 return ASYNCGEN_SUSPENDED
def getasyncgeneratorlocals(asyncgenerator):
 """
 Get the mapping of async generator local variables to their current values.
 A dict is returned, with the keys the local variable names and values the
 bound values."""
 if not isasyncgen(asyncgenerator):
 raise TypeError("{!r} is not a Python generator".format(asyncgenerator))
 frame = getattr(asyncgenerator, "ag_frame", None)
 if frame is not None:
 return asyncgenerator.ag_frame.f_locals
 else:
 return {}
```