+try:
+ import networkx
+except ImportError:
+ msg = "Networkx library is not installed, you will not be able to plot."
+ logger = logging.Logger("Plotter")
+ logger.debug(msg)
+
+try:
+ import matplotlib.pyplot as plt
+except:
+ msg = ("Matplotlib library is not installed or X11 is not enabled. "
+ "You will not be able generate PNG plots.")
+ logger = logging.Logger("Plotter")
+ logger.debug(msg)
+