Can't print attr when attr name contains "\n"

[Withered-Flower-0422]

Edge case though, as shown in title, when an attr name contains "\n", this attr won't be printed.

from objprint import op
op.config(arg_name=True)

class A:
    def __init__(self):
        self.x = 41
        setattr(self, "\n", 42)

a = A()
for attr in dir(a):
    if not attr.startswith("_"):
        print(f"{attr}: {getattr(a, attr)}")
op(a)

Code above prints:

 // a blank line here
: 42
x: 41
a:
<A 0x23202c55d30
  .x = 41
>

a does have an attribute named "\n" whose value is 42, but op ignores it.

Actually regex made the mistake.

re.fullmatch(r"(?!_).*", '\n') # this returns None

Code in objprint.py wrote like above, mistakenly ignores those attr_names which contain "\n".

[gaogaotiantian]

That's probably true, but it does not make sense to use \n for an attribute name. If it's a security loophole we should fix it, otherwise we really don't care about it.