edge weight in networkx has no impact on pagerank?

Question

I am trying to calculate a pagerank for a buyer/seller network. A buyer could be seller too, meaning A could sell $100 worth of stuff to B, and B could sell $20 worth of (other) stuff to A. So I am using DiGraph for the network, and the weight is the $ value.
My question is, the below two scripts, either with or without edge_attr, yield the exact same pagerank values.
So am I missing anything here? Thank you very much for your time.

    import pandas as pd   
    import networkx as nx

    df =pd.DataFrame({'Seller':['A1','B1', 'A2','A2','B2', 'B2'],
                  'Buyer':['B1','A1','B1','B2','A2', 'B2'],
                  'Value':[10,20,30,40,50, 5]})    

    g1 = nx.from_pandas_edgelist(df, 'Seller', "Buyer", create_using=nx.DiGraph())   
    pagerank_g1 = nx.pagerank(g1)     
    pagerank_g1=sorted(pagerank_g1.items(),key=lambda v:(v[1],v[0]),reverse=True)   
    print('  no weight, pagerank_g1', pagerank_g1)   


    g2=nx.from_pandas_edgelist(df, 'Seller', "Buyer", create_using=nx.DiGraph(), edge_attr='Value')   
    pagerank_g2 = nx.pagerank(g2)   
    pagerank_g2=sorted(pagerank_g2.items(),key=lambda v:(v[1],v[0]),reverse=True)   
    print('with weight, pagerank_g2', pagerank_g2) }  

Answer 1

That's because the default weight name in pagerank is weight while yours is Value.

pagerank(G, alpha=0.85, personalization=None, max_iter=100, tol=1e-06, nstart=None, weight='weight', dangling=None)

So either use :

pagerank_g2 = nx.pagerank(g2, weight="Value")

# instead of `pagerank_g2 = nx.pagerank(g2)`

Or rename the column and the edge attribute's name :

df.rename(columns={"Value": "weight"}, inplace=True)
# ...
g2 = nx.from_pandas_edgelist(df, ..., edge_attr="weight")

Output :

#No weight                          #With weight
[                                   [
    ('B1', 0.3956298463938973),         ('B1', 0.40247095482812456),  
    ('A1', 0.3737837827630368),         ('A1', 0.37960199890637514),
    ('B2', 0.13549920760890705),        ('A2', 0.11614768683390858),
    ('A2', 0.09508716323415882)         ('B2', 0.10177935943159168)
]                                   ]