pi@cohoserver /usr/lib/python2.7/dist-packages $ sudo pip install --upgrade numpy
**Cannot fetch index base URL https://pypi.python.org/simple/**
Could not find any downloads that satisfy the requirement numpy in /usr/lib/pymodules/python2.7
Downloading/unpacking numpy
Cleaning up...
No distributions at all found for numpy in /usr/lib/pymodules/python2.7
Storing debug log for failure in /root/.pip/pip.log
pi@cohoserver ~ $ sudo git clone https://github.com/ziahamza/webui-aria2.git
Cloning into 'webui-aria2'...
**error: server certificate verification failed. CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none while accessing https://github.com/ziahamza/webui-aria2.git/info/refs
fatal: HTTP request failed**
终于解决掉问题了，原来是树莓派的时间设置问题，现在一切完美了。
所有的SSL问题都搞定。
![[Web front-end] Permulaan pantas Node.js](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
Saya tidak boleh mengakses https://pypi.python.org/simple pada masa ini walaupun saya memintas dinding. Adalah disyorkan untuk menggunakan sumber douban(http://pypi.douban.com/simple) atau v2ex(http://pypi.v2ex.com/simple) sebaliknya. Tambahkan kandungan berikut pada ~/.pip/pip.conf