pip 安装qrcode 错误,不知道该怎么解决,急求?

E:\Osmo\static\qrcode-5.1>pip install qrcodeYou are using pip version 7.0.3, however version 8.1.2 is available.You should consider upgrading via the 'python -m pip install --upgrade pip' command.Collecting qrcodeException:Traceback (most recent call last):  File "D:\Anaconda\lib\site-packages\pip\basecommand.py", line 223, in main    status = self.run(options, args)  File "D:\Anaconda\lib\site-packages\pip\commands\install.py", line 280, in run    requirement_set.prepare_files(finder)  File "D:\Anaconda\lib\site-packages\pip\req\req_set.py", line 317, in prepare_files    functools.partial(self._prepare_file, finder))  File "D:\Anaconda\lib\site-packages\pip\req\req_set.py", line 304, in _walk_req_to_install    more_reqs = handler(req_to_install)  File "D:\Anaconda\lib\site-packages\pip\req\req_set.py", line 469, in _prepare_file    session=self.session)  File "D:\Anaconda\lib\site-packages\pip\download.py", line 825, in unpack_url    session,  File "D:\Anaconda\lib\site-packages\pip\download.py", line 673, in unpack_http_url    from_path, content_type = _download_http_url(link, session, temp_dir)  File "D:\Anaconda\lib\site-packages\pip\download.py", line 884, in _download_http_url    file_path = os.path.join(temp_dir, filename)  File "D:\Anaconda\lib\ntpath.py", line 85, in join    result_path = result_path + p_pathUnicodeDecodeError: 'ascii' codec can't decode byte 0xc8 in position 7: ordinalnot in range(128)