pycharm没办法安装第三方库怎么解决

　　刚好安装了pycharm，打算用这个ide来开发python，所以新建了一个django的工程，但是提示django的第三方库安装失败。真坑爹啊。 　　Exception: 　　Traceback (most recent call last): 　　File "C:\Python27\lib\site-packages\pip-1.5.6-py2.7.egg\pip\basecommand.py", line 122, in main 　　status = self.run(options, args) 　　File "C:\Python27\lib\site-packages\pip-1.5.6-py2.7.egg\pip\commands\install.py", line 278, in run 　　requirement_set.prepare_files(finder, force_root_egg_info=self.bundle, bundle=self.bundle) 　　File "C:\Python27\lib\site-packages\pip-1.5.6-py2.7.egg\pip\req.py", line 1197, in prepare_files 　　do_download, 　　File "C:\Python27\lib\site-packages\pip-1.5.6-py2.7.egg\pip\req.py", line 1375, in unpack_url 　　self.session, 　　File "C:\Python27\lib\site-packages\pip-1.5.6-py2.7.egg\pip\download.py", line 571, in unpack_http_url 　　temp_location = os.path.join(temp_dir, filename) 　　File "C:\Python27\lib\ntpath.py", line 84, in join 　　result_path = result_path + p_path 　　UnicodeDecodeError: 'ascii' codec can't decode byte 0xcd in position 7: ordinal not in range(128)