67 struct _is {  struct
69     struct _is *next;  argument
70     struct _ts *tstate_head;
72     int64_t id;
73     int64_t id_refcount;
74     int requires_idref;
75     PyThread_type_lock id_mutex;
77     int finalizing;
79     PyObject *modules;
80     PyObject *modules_by_index;
81     PyObject *sysdict;
82     PyObject *builtins;
83     PyObject *importlib;
86     int check_interval;
89     long num_threads;
94     size_t pythread_stacksize;
96     PyObject *codec_search_path;
97     PyObject *codec_search_cache;
98     PyObject *codec_error_registry;
99     int codecs_initialized;
103     struct {
107     } fs_codec;
109     PyConfig config;
111     int dlopenflags;
114     PyObject *dict;  /* Stores per-interpreter state */
116     PyObject *builtins_copy;
140 PyAPI_FUNC(struct _is*) _PyInterpreterState_LookUpID(PY_INT64_T);  argument