Mininet-WiFi and MiniEdit - sdn

Question

I am having problem with installing the Mininet Wifi and miniedit.
I tried to install Mininet-Wifi with the following commands:
$ sudo apt-get install git
$ git clone https://github.com/intrig-unicamp/mininet-wifi
$ cd mininet-wifi
$ sudo util/install.sh -Wlnfv
but in the last command I get this following screen:
…
E: Package 'python-pip' has no installation candidate
Reading package lists... Done
Building dependency tree
Reading state information... Done
python-pip-whl is already the newest version (20.0.2-5ubuntu1.6).
The following package was automatically installed and is no longer required:
libfwupdplugin1
Use 'sudo apt autoremove' to remove it.
0 upgraded, 0 newly installed, 0 to remove and 11 not upgraded.
pip 9.0.3 from /usr/local/lib/python2.7/dist-packages (python 2.7)
Reading package lists... Done
Building dependency tree
Reading state information... Done
iproute2 is already the newest version (5.5.0-1ubuntu1).
The following package was automatically installed and is no longer required:
libfwupdplugin1
Use 'sudo apt autoremove' to remove it.
0 upgraded, 0 newly installed, 0 to remove and 11 not upgraded.
Reading package lists... Done
Building dependency tree
Reading state information... Done
cgroup-tools is already the newest version (0.41-10).
The following package was automatically installed and is no longer required:
libfwupdplugin1
Use 'sudo apt autoremove' to remove it.
0 upgraded, 0 newly installed, 0 to remove and 11 not upgraded.
Installing Mininet-WiFi dependencies
Reading package lists... Done
Building dependency tree Reading state information... Done
Package python-matplotlib is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package 'python-matplotlib' has no installation candidate'''
I have already installed matplotlib and for sure python3, pip3 etc.
I have also a problem with miniEdit.
I took this code from:
https://github.com/intrig-unicamp/mininet-wifi/blob/master/examples/miniedit.py
and when I try to run it, it gives me this error:
'''Traceback (most recent call last): File "miniedit.py", line 59, in <module> from mininet.log import info, debug, warn, setLogLevel ModuleNotFoundError: No module named 'mininet' line 59 is: rom mininet.log import info, debug, warn, setLogLevel from mininet.net import VERSION'''
....
What am I missing?
Thanks!