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Edge.py
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81 lines (55 loc) · 1.91 KB
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#!/usr/bin/env python
# coding: utf-8
# In[1]:
import pandas as pd
class Edge:
"""
Edge
attr:
-------------------
node1(object) -> from_node -> source_node
node1(object) -> to_node -> target_node
num_edges(int) -> capacity of edges
"""
def __init__(self, from_node, to_node, num):
self.from_node = []
self.source = []
self.target = []
self.to_node = []
self.cost = 0
self.num = None
self.length = len(self.edge)
def get_from_node_list(self):
"""
use pandas to fetch the list
"""
return self.from_node
def get_to_node_list(self):
"""
use pandas to fetch the list
"""
return self.to_node
def add_node(self, nodes, souce = True, target = True):
nodes = []
for m in nodes:
for nodes in self.from_node:
if (nodes != None & nodes != self.source & nodes!= self.target):
source.append(self.from_node[nodes])
else:
raise ValueError("A vertex can't be Null")
for n in nodes:
for nodes in self.to_node:
if (nodes != None & nodes != self.source & nodes!= self.target):
target.append(self.to_node[node])
else:
raise ValueError("A vertex can't be Null")
return source, nodes, target
def update_edge(self, edge):
if (source != None & target != None):
self.from_node = self.source
self.to_node = self.target
else:
raise ValueError("Vertex can't be Null")
self.edge = [self.source, self.target]
return self.edge
# In[ ]: