<｜begin▁of▁sentence｜>### Instruction:
As an instructional designer, my primary role is to design and develop educational materials and courses using instructional design principles and technologies. In this context, imagine developing an online course on network analysis using a tool like NetworkX, a Python package for the creation, manipulation, and study of complex networks. As part of the course, students will be asked to work on a practical scenario involving a directed graph with vertices and weighted edges. One of the tasks will be to calculate the maximum flow between two specific vertices and represent this flow object as a string using the NetworkX library.
### Response:
from igraph import Graph

# Create a graph and add weighted edges
g = Graph()
g.add_vertices(3)
g.add_edges([(0, 1), (1, 2)])
g.es['weight'] = [1.0, 2.0]

# Calculate the maximum flow between vertices 0 and 2 using the weights as capacities
flow = g.maxflow(0, 2, 'weight')

# Get the string representation of the flow object
flow_str = str(flow)
print(flow_str)
<|EOT|>
