[GCI 2018] failed when installing snap and some errors

[priscillaleew]

only compatible in python 2.7, cannot install snap in python 3.7
failed when running the 'python setup.py install'

SchemaGraph.py has errors, wgnuplot.exe isn't recognized

'wgnuplot.exe' is not recognized as an internal or external command,
operable program or batch file.
The system cannot find the path specified.
[S:\glib-core\gnuplot.cpp:892] Cannot find GnuPlot (wgnuplot.exe) for plot outDeg.sweden_labeled_5000.plt. Set the $$PATH variable or TGnuPlot::GnuPlotPath. (C:\gnuplot)
Degree distribution of sweden_labeled_5000 is in: outDeg.sweden_labeled_5000.png
'wgnuplot.exe' is not recognized as an internal or external command,
operable program or batch file.
The system cannot find the path specified.
[S:\glib-core\gnuplot.cpp:892] Cannot find GnuPlot (wgnuplot.exe) for plot diam.sweden_labeled_5000.plt. Set the $$PATH variable or TGnuPlot::GnuPlotPath. (C:\gnuplot)
Shortest path distribution of sweden_labeled_5000 is in: diam.sweden_labeled_5000.png
Fraction of nodes in largest connected component in sweden_labeled_5000: 0.023256
'wgnuplot.exe' is not recognized as an internal or external command,
operable program or batch file.
The system cannot find the path specified.
[S:\glib-core\gnuplot.cpp:892] Cannot find GnuPlot (wgnuplot.exe) for plot scc.sweden_labeled_5000.plt. Set the $$PATH variable or TGnuPlot::GnuPlotPath. (C:\gnuplot)
Component size distribution of sweden_labeled_5000 is in: scc.sweden_labeled_5000.png