在树莓派上3B+上安装python-nummpy遇到以下问题：
pi@raspberrypi:~ $ sudo apt install python-numpy -y
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
python-numpy : Depends: liblapack3 but it is not installable or
liblapack.so.3
E: Unable to correct problems, you have held broken packages.
