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# Show the current frame's trace function, so that we can test what the
# command-line options do to the trace function used.
import sys
# Show what the trace function is. If a C-based function is used, then f_trace
# may be None.
trace_fn = sys._getframe(0).f_trace
if trace_fn is None:
trace_name = "None"
else:
# Get the name of the tracer class. Py3k has a different way to get it.
try:
trace_name = trace_fn.im_class.__name__
except AttributeError:
try:
trace_name = trace_fn.__self__.__class__.__name__
except AttributeError:
# A C-based function could also manifest as an f_trace value
# which doesn't have im_class or __self__.
trace_name = trace_fn.__class__.__name__
print("%s %s" % (sys.argv[1], trace_name))
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