gc.get_referents(*objs) Return a list of objects directly referred to by any of the arguments. The referents returned are those

sys.meta_path A list of meta path finder objects that have their

sys.__stdin__ sys.__stdout__ sys.__stderr__ These objects contain the

classmethod from_callable(obj, *, follow_wrapped=True) Return a Signature (or its subclass) object for a given

class traceback.FrameSummary(filename, lineno, name, lookup_line=True, locals=None, line=None) Represent a single frame in the

sys.settrace(tracefunc) Set the system’s trace function, which allows you to implement a Python source code debugger in Python

apply_defaults() Set default values for missing arguments. For variable-positional arguments

traceback.print_tb(tb, limit=None, file=None) Print up to limit stack trace entries from traceback object tb

sys.implementation An object containing information about the implementation of the currently running Python interpreter. The

sys.getcheckinterval() Return the interpreter’s “check interval”; see setcheckinterval().