28. Python Runtime Services¶
The modules described in this chapter provide a wide range of services related to the Python interpreter and its interaction with its environment. Here’s an overview:
- 28.1. 
sys— System-specific parameters and functions - 28.2. 
sysconfig— Provide access to Python’s configuration information - 28.3. 
__builtin__— Built-in objects - 28.4. 
future_builtins— Python 3 builtins - 28.5. 
__main__— Top-level script environment - 28.6. 
warnings— Warning control - 28.7. 
contextlib— Utilities forwith-statement contexts - 28.8. 
abc— Abstract Base Classes - 28.9. 
atexit— Exit handlers - 28.10. 
traceback— Print or retrieve a stack traceback - 28.11. 
__future__— Future statement definitions - 28.12. 
gc— Garbage Collector interface - 28.13. 
inspect— Inspect live objects - 28.14. 
site— Site-specific configuration hook - 28.15. 
user— User-specific configuration hook - 28.16. 
fpectl— Floating point exception control