setup.py 文件源码

def run(self):
        global path, version, initVersion, forcedVersion, installVersion

        name = self.config_vars['dist_name']
        print(name)
        path = os.path.join(self.install_libbase, 'NeoAnalysis')
        if os.path.exists(path):
            raise Exception("It appears another version of %s is already "
                            "installed at %s; remove this before installing." 
                            % (name, path))
        print("Installing to %s" % path)
        rval = install.install.run(self)


        # If the version in __init__ is different from the automatically-generated
        # version string, then we will update __init__ in the install directory
        if initVersion == version:
            return rval

        try:
            initfile = os.path.join(path, '__init__.py')
            data = open(initfile, 'r').read()
            open(initfile, 'w').write(re.sub(r"__version__ = .*", "__version__ = '%s'" % version, data))
            installVersion = version
        except:
            sys.stderr.write("Warning: Error occurred while setting version string in build path. "
                             "Installation will use the original version string "
                             "%s instead.\n" % (initVersion)
                             )
            if forcedVersion:
                raise
            installVersion = initVersion
            sys.excepthook(*sys.exc_info())

        return rval