Could someone explain why this works?
obj = bpy.context.active_object
if (obj.data.materials) : print(“Object has at least one material slot”)
else : print(“Object has no material slots”)
I python the an non empty list/dictorary string evaluates as True. It is also considered good practice just check it like so.
So no if len(my_list) > 0: and similar code, just simple if my_list:
a = []
b = [2, 3, 4]
print(bool(a))
print(bool(b))
print(bool(bpy.data.objects))
The below is from the python Style guide PEP8
For sequences, (strings, lists, tuples), use the fact that empty sequences are false.
Yes: if not seq:
if seq:
No: if len(seq):
if not len(seq):