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The main functions are ``is_builtin_valid_args``, ``is_builtin_partial_args``, and ``has_unknown_args``. Other functions in this module support these three. Notably, we create a ``signatures`` registry to enable introspection of builtin functions in any Python version. This includes builtins that have more than one valid signature. Currently, the registry includes builtins from ``builtins``, ``functools``, ``itertools``, and ``operator`` modules. More can be added as requested. We don't guarantee full coverage. Everything in this module should be regarded as implementation details. Users should try to not use this module directly. 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rr9rtruthcCr r r rr r rr;rxorcCr r r rr r rr=rcOr r r rrr r rrBrcCr r r )excruhandlerr r rrDrcCr r r )rurrr r rrFrcGr r r funcsr r rrHrcCr r r )rucacherr r rrJr)curryexceptsflipjuxtmemoizetoolzcCr r r rnr r rrOrcCr r r )rrrrclassvalr r rrQr)ComposeInstancePropertyztoolz.functoolzcCstdd|jDS)z@ Return the number of positional arguments. ``f(x, y=1)`` has 1css,|]}|j|jkr|j|jurdVqdS)rN)kindPOSITIONAL_OR_KEYWORDrempty.0rr r r Xs  znum_pos_args..)r parametersvalues)sigspecr r r num_pos_argsVsrcCsT|dkrdStdd|jD}|sdSt|jd|}tdd|DS)zA Return the names of position-only arguments if func has **kwargsrr css|] }|j|jkVqdSr )rz VAR_KEYWORDr}r r rrasz'get_exclude_keywords..Ncss|]}|jVqdSr )rAr}r r rrfs)rrrrqr) num_pos_onlyr has_kwargspos_argsr r rget_exclude_keywords]src Cs&zt|WSttfyYdSwr )inspect signature ValueError TypeError)rur r rsignature_or_specis  rcCs|t|tr%t|dkr|\}}}t|dtsJn|\}}d}t|}n |}t|}t|}d}t||}|||||fS)a Convert the signature spec in ``module_info`` to add to ``signatures`` The input signature spec is one of: - ``lambda_func`` - ``(num_position_args, lambda_func)`` - ``(num_position_args, lambda_func, keyword_only_args)`` The output signature spec is: ``(num_position_args, lambda_func, keyword_exclude, sigspec)`` where ``keyword_exclude`` includes keyword only arguments and, if variadic keywords is present, the names of position-only argument. The latter is included to support builtins such as ``partial(func, *args, **kwargs)``, which allows ``func=`` to be used as a keyword even though it's the name of a positional argument. rTr )rjrrprrr)sigrru keyword_onlyrkeyword_excluder r r expand_sigps     rcCsd|D]+\}}t|trt|}|D]\}}t||r.tdd|D}||t||<qqdS)Ncss|]}t|VqdSr )rr~rr r rrz,create_signature_registry..)itemsrjrrr_rr^) module_info signaturesrinforAsigsnew_sigsr r rcreate_signature_registrys  rcCsh|\}}}}t||krdS|rt|}|D]}||dqz ||i|WdSty3YdSw)z4 Like ``is_valid_args`` for the given signature specFNT)rprBpopr)rrrrrurrrSr r r check_valids   rc,|tvrdSt|}tfdd|DS)zC Like ``is_valid_args`` for builtins in our ``signatures`` registryNc3|] }t|VqdSr )rrrkr rrz!_is_valid_args..rrrurrrr rkr_is_valid_argsrc Cs`|\}}}}t||krd|t|}||}|r)t|}|D]}||dq t||||S)z6 Like ``is_partial_args`` for the given signature specr N)rprBrr) rrrrrurrpadrSr r r check_partials  rcr)zE Like ``is_partial_args`` for builtins in our ``signatures`` registryNc3rr )rrrkr rrrz#_is_partial_args..rrr rkr_is_partial_argsrrcCs(|\}}}}|s ||krdSt|||S)NF)r)rrrrurrr r r check_aritys   rcsB|tvrdSt|}fdd|D}t|rdSt|rdSdS)Ncsg|]}t|qSr )rrrr r sz_is_arity..TFrrr)rrurchecksr rr _is_aritysrcC|\}}}}t||Sr )rrrrurrr r r check_varargs  rcC>|tvrdSt|}dd|D}t|rdSt|rdSdS)NcSg|]}t|qSr )rrr r rrz _has_varargs..TFrrurrr r r _has_varargsrcCs|\}}}}|r dSt||S)NT)rrr r rcheck_keywordss  rcCr)NcSrr )rrr r rrrz!_has_keywords..TFrrr r r _has_keywordsrrcCrr )rrr r rcheck_required_argsrrcsH|tvrdSt|}dd|D}|dtfdd|Dr"SdS)NcSrr )rrr r rr rz&_num_required_args..rc3s|]}|kVqdSr r r}valr rrrz%_num_required_args..)rr)rurvalsr rr_num_required_argssrr )F)r+r,)rr)r)rSrT)rY)rf)NNNN)rr+r,)rFrT)rSrTNNNTN)rrr,r )rr)NNN)NNNNN)#__doc__ functoolsr itertoolsoperator importlibr functoolzrrrrrbuiltinsrrBupdaterrrrrrrrrrrrrrrrrrr r r rsl      !#% ')+.1359=? 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