diff --git a/lib/assets/Lib/_testcapi.py b/lib/assets/Lib/_testcapi.py
new file mode 100644
--- /dev/null
+++ b/lib/assets/Lib/_testcapi.py
@@ -0,0 +1,290 @@
+
+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 = 2147483647
+
+LONG_MIN = -2147483648
+
+PY_SSIZE_T_MAX = 2147483647
+
+PY_SSIZE_T_MIN = -2147483648
+
+SHRT_MAX = 32767
+
+SHRT_MIN = -32768
+
+SIZEOF_PYGC_HEAD = 16
+
+UCHAR_MAX = 255
+
+UINT_MAX = 4294967295
+
+ULLONG_MAX = 18446744073709551615
+
+ULONG_MAX = 4294967295
+
+USHRT_MAX = 65535
+
+__loader__ = "<_frozen_importlib.ExtensionFileLoader object at 0x00C98DD0>"
+
+def _pending_threadfunc(*args,**kw):
+    pass
+
+class _test_structmembersType(object):
+    pass
+
+def _test_thread_state(*args,**kw):
+    pass
+
+def argparsing(*args,**kw):
+    pass
+
+def code_newempty(*args,**kw):
+    pass
+
+def codec_incrementaldecoder(*args,**kw):
+    pass
+
+def codec_incrementalencoder(*args,**kw):
+    pass
+
+def crash_no_current_thread(*args,**kw):
+    pass
+
+class error(Exception):
+    pass
+
+def exception_print(*args,**kw):
+    pass
+
+def getargs_B(*args,**kw):
+    pass
+
+def getargs_H(*args,**kw):
+    pass
+
+def getargs_I(*args,**kw):
+    pass
+
+def getargs_K(*args,**kw):
+    pass
+
+def getargs_L(*args,**kw):
+    pass
+
+def getargs_Z(*args,**kw):
+    pass
+
+def getargs_Z_hash(*args,**kw):
+    pass
+
+def getargs_b(*args,**kw):
+    pass
+
+def getargs_c(*args,**kw):
+    pass
+
+def getargs_h(*args,**kw):
+    pass
+
+def getargs_i(*args,**kw):
+    pass
+
+def getargs_k(*args,**kw):
+    pass
+
+def getargs_keyword_only(*args,**kw):
+    pass
+
+def getargs_keywords(*args,**kw):
+    pass
+
+def getargs_l(*args,**kw):
+    pass
+
+def getargs_n(*args,**kw):
+    pass
+
+def getargs_p(*args,**kw):
+    pass
+
+def getargs_s(*args,**kw):
+    pass
+
+def getargs_s_hash(*args,**kw):
+    pass
+
+def getargs_s_star(*args,**kw):
+    pass
+
+def getargs_tuple(*args,**kw):
+    pass
+
+def getargs_u(*args,**kw):
+    pass
+
+def getargs_u_hash(*args,**kw):
+    pass
+
+def getargs_w_star(*args,**kw):
+    pass
+
+def getargs_y(*args,**kw):
+    pass
+
+def getargs_y_hash(*args,**kw):
+    pass
+
+def getargs_y_star(*args,**kw):
+    pass
+
+def getargs_z(*args,**kw):
+    pass
+
+def getargs_z_hash(*args,**kw):
+    pass
+
+def getargs_z_star(*args,**kw):
+    pass
+
+class instancemethod(object):
+    pass
+
+def make_exception_with_doc(*args,**kw):
+    pass
+
+def make_memoryview_from_NULL_pointer(*args,**kw):
+    pass
+
+def parse_tuple_and_keywords(*args,**kw):
+    pass
+
+def pytime_object_to_time_t(*args,**kw):
+    pass
+
+def pytime_object_to_timespec(*args,**kw):
+    pass
+
+def pytime_object_to_timeval(*args,**kw):
+    pass
+
+def raise_exception(*args,**kw):
+    pass
+
+def raise_memoryerror(*args,**kw):
+    pass
+
+def run_in_subinterp(*args,**kw):
+    pass
+
+def set_exc_info(*args,**kw):
+    pass
+
+def test_L_code(*args,**kw):
+    pass
+
+def test_Z_code(*args,**kw):
+    pass
+
+def test_capsule(*args,**kw):
+    pass
+
+def test_config(*args,**kw):
+    pass
+
+def test_datetime_capi(*args,**kw):
+    pass
+
+def test_dict_iteration(*args,**kw):
+    pass
+
+def test_empty_argparse(*args,**kw):
+    pass
+
+def test_k_code(*args,**kw):
+    pass
+
+def test_lazy_hash_inheritance(*args,**kw):
+    pass
+
+def test_list_api(*args,**kw):
+    pass
+
+def test_long_and_overflow(*args,**kw):
+    pass
+
+def test_long_api(*args,**kw):
+    pass
+
+def test_long_as_double(*args,**kw):
+    pass
+
+def test_long_as_size_t(*args,**kw):
+    pass
+
+def test_long_long_and_overflow(*args,**kw):
+    pass
+
+def test_long_numbits(*args,**kw):
+    pass
+
+def test_longlong_api(*args,**kw):
+    pass
+
+def test_null_strings(*args,**kw):
+    pass
+
+def test_s_code(*args,**kw):
+    pass
+
+def test_string_from_format(*args,**kw):
+    pass
+
+def test_string_to_double(*args,**kw):
+    pass
+
+def test_u_code(*args,**kw):
+    pass
+
+def test_unicode_compare_with_ascii(*args,**kw):
+    pass
+
+def test_widechar(*args,**kw):
+    pass
+
+def test_with_docstring(*args,**kw):
+    """This is a pretty normal docstring."""
+    pass
+
+def traceback_print(*args,**kw):
+    pass
+
+def unicode_aswidechar(*args,**kw):
+    pass
+
+def unicode_aswidecharstring(*args,**kw):
+    pass
+
+def unicode_encodedecimal(*args,**kw):
+    pass
+
+def unicode_transformdecimaltoascii(*args,**kw):
+    pass