Providing more than one argument to Digraph subclass leads to exception in __new__ #8367
Description
Current Behavior
When trying to instantiate a Digraph subclass with more than one argument an exception occurs in Digraph.__new__().
Expected Behavior
When subclassing Digraph, subclass's __init__ should accept args and kwargs as defined by the subclass __init__ method.
Steps to Reproduce
import networkx as nx
class ChildGraph(nx.DiGraph):
def __init__(self, arg1, arg2 = 4, arg3 = 'b'):
super().__init__()
self.arg1 = arg1
self.arg2 = arg2
self.arg3 = arg3
def test_child_graph():
g1 = ChildGraph(1, 2, 'a')
assert g1.arg1 == 1
assert g1.arg2 == 2
assert g1.arg3 == 'a'
yields
def test_child_graph():
> g1 = ChildGraph(1, 2, 'a')
^^^^^^^^^^^^^^^^^^^^^
E TypeError: DiGraph.__new__() takes from 1 to 2 positional arguments but 4 were given
Environment
Python version: 3.11
NetworkX version: 3.6
Additional context
Ubuntu 22.04, kernel 6.5, 6.8
Suggested fix
Add an *args argument to the __new__ method defined in the Digraph base class.