[Biopython-dev] [Biopython - Bug #3405] (New) to_networkx converts weights as string

[redmine at redmine.open-bio.org]

Issue #3405 has been reported by Aleksey Kladov.

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Bug #3405: to_networkx converts weights as string
https://redmine.open-bio.org/issues/3405

Author: Aleksey Kladov
Status: New
Priority: Normal
Assignee: 
Category: 
Target version: 
URL: 


in the file /Bio/Phylo/_utils.py in the method add_edge(graph, n1, n2) there is a line

<pre> graph.add_edge(n1, n2, weight=str(n2.branch_length or 1.0)) </pre>


It's strange, because if weights are strings, then you are unable to find shortest paths due to

<pre>TypeError: unsupported operand type(s) for +: 'int' and 'str'</pre>


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