19. Operating System Services
The modules in this chapter provide access to a wide variety of operating system services with an emphasis on low-level I/O, process management, and the operating environment. Modules that are commonly used in conjunction with writing systems programs are also included—for example, modules to read configuration files, write log files, and so forth. Chapter 18, “File and Directory Handling,” covers high-level modules related to file and filesystem manipulation—the material presented here tends be at a lower level than that.
Most of Python’s operating system modules are based on POSIX interfaces. POSIX is a standard that defines a core set of operating system interfaces. Most UNIX systems support POSIX, and other ...
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