ΘΕΜΑ: python graph with input edges and nodes

import sys
import networkx as nx
import graph
 
 
n = raw_input("Enter the number on nodes: ")
e = raw_input("Enter the number of edges: ")
 
G = nx.Graph()
 
G.add_node(n)
G.add_edge(e,n)
 
 
nx.write_gml(G, "graph.gml")

for i in range(10):
  node = input('Δώσε node : ')
  G.add_node(node)
 

 
for i in range(5):
  edge=input('δωσε edge').split()
  G.add_edge(*edge)

import networkx as nx
import matplotlib.pyplot as plt
import os
 
def read_number_of_nodes_and_edges():
    number_of_nodes=int(input('Enter the number of nodes : '))
    number_of_edges=int(input('Enter the number of edges : '))
    return number_of_nodes, number_of_edges
 
def create_graph(nnodes, nedges):
    G=nx.generators.random_graphs.gnm_random_graph(nnodes,nedges)
    return G
 
def draw_graph(g):
    nx.draw_networkx(g)
    print('close the graph to continue')
    plt.show()
 
def save_graph(g,file_name):
    nx.write_gml(g, file_name)
    print ('The graph is saved as {} in {} directory.'.format(file_name, os.getcwd() ))
 
 
def main_graph():
    nnodes, nedges=read_number_of_nodes_and_edges()
    G=create_graph(nnodes, nedges)
    draw_graph(G)
    save_graph(G,'mygraph.gml')
 

import networkx as nx
import matplotlib.pyplot as plt
import os
 
number_of_nodes=int(input('Enter the number of nodes : '))
number_of_edges=int(input('Enter the number of edges : '))
 
 
G=nx.generators.random_graphs.gnm_random_graph(number_of_nodes,number_of_edges)
 
nx.draw_networkx(G)
print('close the graph to continue')
plt.show()
 
nx.write_gml(G, 'mygraph.gml')
print ('The graph is saved as "mygraph.gml" in {} directory.'.format(os.getcwd() ))
 

from operator import itemgetter
import networkx as nx
import matplotlib.pyplot as plt
 
 
G= nx.Graph()
G= nx.read_gml('mygraph.gml')
 
print(G.nodes())
print(G.edges())
 
n = G.nodes()
n = int(input("Enter node to create ego network: "))
 
#node_and_degree=G.degree(n)
 
#(largest_hub,degree)=sorted(node_and_degree(n),key=itemgetter(1))[-1]
 
 
hub_ego = nx.ego_graph(G,n)
 
 
pos = nx.spring_layout(hub_ego)
 
nx.draw(hub_ego,pos,node_color='b',with_labels=False)
 
 
nx.draw_networkx_nodes(hub_ego,pos,nodelist=[n],node_size=300,node_color='r')
 
plt.savefig('ego_graph.png')
 
plt.show()