@@ -132,7 +132,9 @@ def apply(self, m1, m2, expression, evaluation, options):
132132 return
133133
134134 args = (py_m1 , py_m2 )
135- g = graph_helper (nx .barbell_graph , options , False , "spring" , evaluation , None , * args )
135+ g = graph_helper (
136+ nx .barbell_graph , options , False , "spring" , evaluation , None , * args
137+ )
136138 if not g :
137139 return None
138140
@@ -219,7 +221,9 @@ def complete_graph_apply(self, n, expression, evaluation, options):
219221 return
220222
221223 args = (py_n ,)
222- g = graph_helper (nx .complete_graph , options , False , "circular" , evaluation , None , * args )
224+ g = graph_helper (
225+ nx .complete_graph , options , False , "circular" , evaluation , None , * args
226+ )
223227 if not g :
224228 return None
225229
@@ -394,7 +398,9 @@ def apply(self, n, expression, evaluation, options):
394398 return
395399
396400 args = (py_n ,)
397- g = graph_helper (nx .graph_atlas , options , False , "spring" , evaluation , None , * args )
401+ g = graph_helper (
402+ nx .graph_atlas , options , False , "spring" , evaluation , None , * args
403+ )
398404 if not g :
399405 return None
400406 g .n = n
@@ -416,7 +422,9 @@ def hkn_harary_apply(self, k, n, expression, evaluation, options):
416422 from pymathics .graph .harary import hkn_harary_graph
417423
418424 args = (py_k , py_n )
419- g = graph_helper (hkn_harary_graph , options , False , "circular" , evaluation , None , * args )
425+ g = graph_helper (
426+ hkn_harary_graph , options , False , "circular" , evaluation , None , * args
427+ )
420428 if not g :
421429 return None
422430 g .k = py_k
@@ -489,7 +497,9 @@ def apply(self, n, m, expression, evaluation, options):
489497 from pymathics .graph .harary import hnm_harary_graph
490498
491499 args = (py_n , py_m )
492- g = graph_helper (hnm_harary_graph , options , False , "circular" , evaluation , None , * args )
500+ g = graph_helper (
501+ hnm_harary_graph , options , False , "circular" , evaluation , None , * args
502+ )
493503 if not g :
494504 return None
495505 g .n = py_n
@@ -556,7 +566,9 @@ def apply(self, n, expression, evaluation, options):
556566 return
557567
558568 args = (py_n ,)
559- g = graph_helper (nx .ladder_graph , options , False , "spring" , evaluation , 0 , * args )
569+ g = graph_helper (
570+ nx .ladder_graph , options , False , "spring" , evaluation , 0 , * args
571+ )
560572 if not g :
561573 return None
562574 g .G .n = n
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