Create a graph from the pandas DataFrame

Let's start by creating a graph from a pandas DataFrame. In this exercise, you'll create a new bipartite graph by looping over the edgelist (which is a DataFrame object).

For simplicity's sake, in this graph construction procedure, any edge between a student and a forum node will be the 'last' edge (in time) that a student posted to a forum over the entire time span of the dataset, though there are ways to get around this.

Additionally, to shorten the runtime of the exercise, we have provided a sub-sampled version of the edge list as data. Explore it in the IPython Shell to familiarize yourself with it.

Instantiate a new Graph called G.
Add nodes from each of the partitions. Use the .add_nodes_from() method to do this. The two partitions are 'student' and 'forum'. To add nodes from the 'student' partition, for example, the arguments to .add_nodes_from() would be data['student'] and bipartite='student'.
Add in each edge along with the date the edge was created. To do this, use the .add_edge() method inside the loop, with the arguments d['student'], d['forum'], and date=d['date'].

Take Hint (-30 XP)

Exercise

Create a graph from the pandas DataFrame

Instructions