build_py.py 文件源码

def byte_compile(self, files):
        if sys.dont_write_bytecode:
            self.warn('byte-compiling is disabled, skipping.')
            return

        from distutils.util import byte_compile
        prefix = self.build_lib
        if prefix[-1] != os.sep:
            prefix = prefix + os.sep

        # XXX this code is essentially the same as the 'byte_compile()
        # method of the "install_lib" command, except for the determination
        # of the 'prefix' string.  Hmmm.

        if self.compile:
            byte_compile(files, optimize=0,
                         force=self.force, prefix=prefix, dry_run=self.dry_run)
        if self.optimize > 0:
            byte_compile(files, optimize=self.optimize,
                         force=self.force, prefix=prefix, dry_run=self.dry_run)