# _testcapi - pydoc - phpman Help on module _testcapi: ## NAME _testcapi ## MODULE REFERENCE The following documentation is automatically generated from the Python source files. It may be incomplete, incorrect or include features that are considered implementation detail and may vary between Python implementations. When in doubt, consult the module reference at the location listed above. ## CLASSES HeapCType(builtins.object) HeapCTypeSubclass HeapCTypeSubclassWithFinalizer builtins.Exception(builtins.BaseException) error builtins.object ContainerNoGC HeapCTypeSetattr HeapCTypeWithBuffer HeapCTypeWithDict HeapCTypeWithNegativeDict HeapCTypeWithWeakref HeapDocCType HeapGcCType NullTpDocType ### class ContainerNoGC | Static methods defined here: | | __new__(*args, **kwargs) from builtins.type | Create and return a new object. See help(type) for accurate signature. | | ---------------------------------------------------------------------- | Data descriptors defined here: | | value | a container value for test purposes ### class HeapCTypeSetattr | A heap type without GC, but with overridden __setattr__. | | The 'value' attribute is set to 10 in __init__ and updated via attribute setting. | | Methods defined here: | | __delattr__(self, name, /) | Implement delattr(self, name). | | __init__(self, /, *args, **kwargs) | Initialize self. See help(type(self)) for accurate signature. | | __setattr__(self, name, value, /) | Implement setattr(self, name, value). | | ---------------------------------------------------------------------- | Data descriptors defined here: | | pvalue ### class HeapCTypeSubclass | Subclass of HeapCType, without GC. | | __init__ sets the 'value' attribute to 10 and 'value2' to 20. | | Method resolution order: | HeapCTypeSubclass | HeapCType | builtins.object | | Methods defined here: | | __init__(self, /, *args, **kwargs) | Initialize self. See help(type(self)) for accurate signature. | | ---------------------------------------------------------------------- | Data descriptors defined here: | | value2 | | ---------------------------------------------------------------------- | Data descriptors inherited from HeapCType: | | value ### class HeapCTypeSubclassWithFinalizer | Subclass of HeapCType with a finalizer that reassigns __class__. | | __class__ is set to plain HeapCTypeSubclass during finalization. | __init__ sets the 'value' attribute to 10 and 'value2' to 20. | | Method resolution order: | HeapCTypeSubclassWithFinalizer | HeapCTypeSubclass | HeapCType | builtins.object | | Methods defined here: | | __del__(...) | | __init__(self, /, *args, **kwargs) | Initialize self. See help(type(self)) for accurate signature. | | ---------------------------------------------------------------------- | Data descriptors defined here: | | value2 | | ---------------------------------------------------------------------- | Data descriptors inherited from HeapCType: | | value ### class HeapCTypeWithBuffer | Heap type with buffer support. | | The buffer is set to [b'1', b'2', b'3', b'4'] ### class HeapCTypeWithDict | Data descriptors defined here: | | __dict__ | | dictobj ### class HeapCTypeWithNegativeDict | Data descriptors defined here: | | __dict__ | | dictobj ### class HeapCTypeWithWeakref | Data descriptors defined here: | | weakreflist ### class HeapDocCType | HeapDocCType(arg1, arg2) | | somedoc ### class HeapGcCType | A heap type with GC, and with overridden dealloc. | | The 'value' attribute is set to 10 in __init__. | | Methods defined here: | | __init__(self, /, *args, **kwargs) | Initialize self. See help(type(self)) for accurate signature. | | ---------------------------------------------------------------------- | Data descriptors defined here: | | value ### class NullTpDocType ### class error | Method resolution order: | error | builtins.Exception | builtins.BaseException | builtins.object | | Data descriptors defined here: | | __weakref__ | list of weak references to the object (if defined) | | ---------------------------------------------------------------------- | Methods inherited from builtins.Exception: | | __init__(self, /, *args, **kwargs) | Initialize self. See help(type(self)) for accurate signature. | | ---------------------------------------------------------------------- | Static methods inherited from builtins.Exception: | | __new__(*args, **kwargs) from builtins.type | Create and return a new object. See help(type) for accurate signature. | | ---------------------------------------------------------------------- | Methods inherited from builtins.BaseException: | | __delattr__(self, name, /) | Implement delattr(self, name). | | __getattribute__(self, name, /) | Return getattr(self, name). | | __reduce__(...) | Helper for pickle. | | __repr__(self, /) | Return repr(self). | | __setattr__(self, name, value, /) | Implement setattr(self, name, value). | | __setstate__(...) | | __str__(self, /) | Return str(self). | | with_traceback(...) | Exception.with_traceback(tb) -- | set self.__traceback__ to tb and return self. | | ---------------------------------------------------------------------- | Data descriptors inherited from builtins.BaseException: | | __cause__ | exception cause | | __context__ | exception context | | __dict__ | | __suppress_context__ | | __traceback__ | | args ## FUNCTIONS DecodeLocaleEx(...) EncodeLocaleEx(...) PyBuffer_SizeFromFormat(...) PyDateTime_DATE_GET(...) PyDateTime_DELTA_GET(...) PyDateTime_GET(...) PyDateTime_TIME_GET(...) PyTime_AsMicroseconds(...) PyTime_AsMilliseconds(...) PyTime_AsSecondsDouble(...) PyTime_AsTimespec(...) PyTime_AsTimeval(...) PyTime_FromSeconds(...) PyTime_FromSecondsObject(...) Py_CompileString(...) W_STOPCODE(...) ### argparsing ### bad_get ### call_in_temporary_c_thread set_error_class(error_class) -> None ### check_pyobject_forbidden_bytes_is_freed ### check_pyobject_freed_is_freed ### check_pyobject_null_is_freed ### check_pyobject_uninitialized_is_freed ### code_newempty ### codec_incrementaldecoder ### codec_incrementalencoder ### crash_no_current_thread ### create_cfunction ### datetime_check_date ### datetime_check_datetime ### datetime_check_delta ### datetime_check_time ### datetime_check_tzinfo ### dict_get_version ### dict_getitem_knownhash ### dict_hassplittable ### docstring_empty ### docstring_no_signature This docstring has no signature. ### docstring_with_invalid_signature docstring_with_invalid_signature($module, /, boo) This docstring has an invalid signature. ### docstring_with_invalid_signature2 docstring_with_invalid_signature2($module, /, boo) -- This docstring also has an invalid signature. ### docstring_with_signature This docstring has a valid signature. ### docstring_with_signature_and_extra_newlines This docstring has a valid signature and some extra newlines. ### docstring_with_signature_but_no_doc ### docstring_with_signature_with_defaults This docstring has a valid signature with parameters, and the parameters take defaults of varying types. ### exception_print ### fatal_error fatal_error(message, release_gil=False): call Py_FatalError(message) ### get_args ### get_date_fromdate ### get_date_fromtimestamp ### get_datetime_fromdateandtime ### get_datetime_fromdateandtimeandfold ### get_datetime_fromtimestamp ### get_delta_fromdsu ### get_kwargs ### get_mapping_items ### get_mapping_keys ### get_mapping_values ### get_time_fromtime ### get_time_fromtimeandfold ### get_timezone_utc_capi ### get_timezones_offset_zero ### getargs_B ### getargs_C ### getargs_D ### getargs_H ### getargs_I ### getargs_K ### getargs_L ### getargs_S ### getargs_U ### getargs_Y ### getargs_Z ### getargs_Z_hash ### getargs_b ### getargs_c ### getargs_d ### getargs_es ### getargs_es_hash ### getargs_et ### getargs_et_hash ### getargs_f ### getargs_h ### getargs_i ### getargs_k ### getargs_keyword_only ### getargs_keywords ### getargs_l ### getargs_n ### getargs_p ### getargs_positional_only_and_keywords ### getargs_s ### getargs_s_hash ### getargs_s_hash_int ### getargs_s_hash_int2 ### getargs_s_star ### getargs_tuple ### getargs_u ### getargs_u_hash ### getargs_w_star ### getargs_y ### getargs_y_hash ### getargs_y_star ### getargs_z ### getargs_z_hash ### getargs_z_star ### getbuffer_with_null_view ### getitem_with_error ### gh_99240_clear_args ### hamt ### join_temporary_c_thread ### make_exception_with_doc ### make_memoryview_from_NULL_pointer ### make_timezones_capi ### mapping_has_key ### meth_fastcall ### meth_fastcall_keywords ### meth_noargs ### meth_o ### meth_varargs ### meth_varargs_keywords ### no_docstring ### parse_tuple_and_keywords ### pymarshal_read_last_object_from_file ### pymarshal_read_long_from_file ### pymarshal_read_object_from_file ### pymarshal_read_short_from_file ### pymarshal_write_long_to_file ### pymarshal_write_object_to_file ### pymem_api_misuse ### pymem_buffer_overflow ### pymem_getallocatorsname ### pymem_malloc_without_gil ### pynumber_tobase ### pyobject_bytes_from_null ### pyobject_fastcall ### pyobject_fastcalldict ### pyobject_malloc_without_gil ### pyobject_repr_from_null ### pyobject_str_from_null ### pyobject_vectorcall ### pytime_object_to_time_t ### pytime_object_to_timespec ### pytime_object_to_timeval ### pyvectorcall_call ### raise_SIGINT_then_send_None ### raise_exception ### raise_memoryerror ### remove_mem_hooks Remove memory hooks. ### return_null_without_error ### return_result_with_error ### run_in_subinterp ### sequence_getitem ### sequence_setitem ### set_errno ### set_exc_info ### set_nomemory set_nomemory(start:int, stop:int = 0) ### stack_pointer ### test_L_code ### test_Z_code ### test_buildvalue_N ### test_buildvalue_issue38913 ### test_capsule ### test_config ### test_datetime_capi ### test_decref_doesnt_leak ### test_dict_iteration ### test_empty_argparse ### test_from_contiguous ### test_gc_control ### test_get_statictype_slots ### test_incref_decref_API ### test_incref_doesnt_leak ### test_k_code ### test_lazy_hash_inheritance ### test_list_api ### test_long_and_overflow ### test_long_api ### test_long_as_double ### test_long_as_size_t ### test_long_as_unsigned_long_long_mask ### test_long_long_and_overflow ### test_long_numbits ### test_longlong_api ### test_mapping_has_key_string ### test_pep3118_obsolete_write_locks ### test_py_is_funcs ### test_py_is_macros ### test_pymem_alloc0 ### test_pymem_setallocators ### test_pymem_setrawallocators ### test_pyobject_setallocators ### test_pythread_tss_key_state ### test_refcount_funcs ### test_refcount_macros ### test_s_code ### test_set_type_size ### test_sizeof_c_types ### test_string_from_format ### test_string_to_double ### test_structseq_newtype_doesnt_leak ### test_structseq_newtype_null_descr_doc ### test_u_code ### test_unicode_compare_with_ascii ### test_widechar ### test_with_docstring This is a pretty normal docstring. ### test_xdecref_doesnt_leak ### test_xincref_doesnt_leak ### traceback_print ### tracemalloc_get_traceback ### tracemalloc_track ### tracemalloc_untrack ### unicode_asucs4 ### unicode_asutf8 ### unicode_asutf8andsize ### unicode_aswidechar ### unicode_aswidecharstring ### unicode_copycharacters ### unicode_encodedecimal ### unicode_findchar ### unicode_legacy_string ### unicode_transformdecimaltoascii ### with_tp_del ### without_gc ### write_unraisable_exc ## DATA CHAR_MAX = 127 CHAR_MIN = -128 DBL_MAX = 1.7976931348623157e+308 DBL_MIN = 2.2250738585072014e-308 FLT_MAX = 3.4028234663852886e+38 FLT_MIN = 1.1754943508222875e-38 INT_MAX = 2147483647 INT_MIN = -2147483648 LLONG_MAX = 9223372036854775807 LLONG_MIN = -9223372036854775808 LONG_MAX = 9223372036854775807 LONG_MIN = -9223372036854775808 PY_SSIZE_T_MAX = 9223372036854775807 PY_SSIZE_T_MIN = -9223372036854775808 SHRT_MAX = 32767 SHRT_MIN = -32768 SIZEOF_TIME_T = 8 UCHAR_MAX = 255 UINT_MAX = 4294967295 ULLONG_MAX = 18446744073709551615 ULONG_MAX = 18446744073709551615 USHRT_MAX = 65535 WITH_PYMALLOC = True the_number_three = 3 ## FILE /usr/lib/python3.10/lib-dynload/_testcapi.cpython-310-x86_64-linux-gnu.so