setup.py 文件源码

def run(self):
        """Before executing run command, download data files.
        """
        for f in self.data_files:
            if not isinstance(f, tuple):
                continue
            for i, u in enumerate(f[1]):
                base = path.basename(u)
                f[1][i] = path.join(sys.prefix, f[0], base)
                if not path.exists(f[1][i]):
                    f[1][i] = path.join(sys.prefix, "local", f[0], base)
                if not path.exists(f[1][i]):
                    f[1][i] = path.join(site.getuserbase(), f[0], base)
                if not path.exists(f[1][i]):
                    f[1][i] = urllib.urlretrieve(u, base)[0]
        return distutils.command.install_data.install_data.run(self)