pip安装stanfordcorenlp报错

(base) C:\xxx>pip install stanfordcorenlp
Collecting stanfordcorenlp
Using cached https://files.pythonhosted.org/packages/35/cb/0a271890bbe3a77fc1aca2bc3a58b14e11799ea77cb5f7d6fb0a8b4c46fa/stanfordcorenlp-3.9.1.1-py2.py3-none-any.whl
Requirement already satisfied: requests in c:\xxx\appdata\local\continuum\anaconda3\lib\site-packages (from stanfordcorenlp) (2.14.2)
Requirement already satisfied: psutil in c:\xxx\appdata\local\continuum\anaconda3\lib\site-packages (from stanfordcorenlp) (5.2.2)
Could not install packages due to an EnvironmentError: [Errno 2] No such file or directory: 'c:\xxi\appdata\local\continuum\anaconda3\lib\site-packages\python_dateutil-2.7.5.dist-info\METADATA'

请各位指点