setup.py 文件源码

def run(self):
        if not self.has_npm():
            log.error("`npm` unavailable.  If you're running this command using sudo, make sure `npm` is available to sudo")
        else:
            env = os.environ.copy()
            env['PATH'] = npm_path
            log.info("Installing build dependencies with npm. This may take a while...")
            check_call(["npm", "install"], cwd=jsroot, stdout=sys.stdout, stderr=sys.stderr, **prckws)
            os.utime(node_modules, None)

        for t in self.targets:
            if not os.path.exists(t):
                msg = "Missing file: %s" % t
                if not self.has_npm():
                    msg += "\nnpm is required to build a development version of jupyter-" + name
                raise ValueError(msg)

        # update package data in case this created new files
        update_package_data(self.distribution)