Python Initialization Configuration

PyWideStringList

• PyStatus PyWideStringList_Append(PyWideStringList *list, const wchar_t *item)
• PyStatus PyWideStringList_Insert(PyWideStringList *list, Py_ssize_t index, const wchar_t *item)

PyStatus

• int exitcode
• const char *err_msg
• const char *func
• PyStatus PyStatus_Ok(void)
• PyStatus PyStatus_Error(const char *err_msg)
• PyStatus PyStatus_NoMemory(void)
• PyStatus PyStatus_Exit(int exitcode)
• int PyStatus_Exception(PyStatus status)
• int PyStatus_IsError(PyStatus status)
• int PyStatus_IsExit(PyStatus status)
• void Py_ExitStatusException(PyStatus status)

PyConfig

When done, the PyConfig_Clear() function must be used to release the configuration memory

• void PyConfig_InitPythonConfig(PyConfig *config)
• void PyConfig_InitIsolatedConfig(PyConfig *config)
• PyStatus PyConfig_SetString(PyConfig *config, wchar_t *const *config_str, const wchar_t *str)
• PyStatus PyConfig_SetBytesString(PyConfig *config, wchar_t *const *config_str, const char *str)
• PyStatus PyConfig_SetArgv(PyConfig *config, int argc, wchar_t *const *argv)
• PyStatus PyConfig_SetBytesArgv(PyConfig *config, int argc, char *const *argv)
• PyStatus PyConfig_SetWideStringList(PyConfig *config, PyWideStringList *list, Py_ssize_t length, wchar_t **items)
• PyStatus PyConfig_Read(PyConfig *config)
• void PyConfig_Clear(PyConfig *config)

Initialization with PyConfig

• PyStatus Py_InitializeFromConfig(const PyConfig *config)

Py_RunMain()

• int Py_RunMain(void): Execute the command (PyConfig.run_command), the script (PyConfig.run_filename) or the module (PyConfig.run_module) specified on the command line or in the configuration

Multi-Phase Initialization Private Provisional API

• “Core” initialization phase, “bare minimum Python”:
  • Builtin types;
  • Builtin exceptions;
  • Builtin and frozen modules;
  • The sys module is only partially initialized (ex: sys.path doesn’t exist yet).
• “Main” initialization phase, Python is fully initialized:
  • Install and configure importlib;
  • Apply the Path Configuration;
  • Install signal handlers;
  • Finish sys module initialization (ex: create sys.stdout and sys.path);
  • Enable optional features like faulthandler and tracemalloc;
  • Import the site module;
  • etc.