So, for example, when I call
print(help(all)
or print(help(list.append))
it returns
Help on built-in function all in module builtins:
all(iterable, /)
Return True if bool(x) is True for all values x in the iterable.
If the iterable is empty, return True.
(END)
or
Help on method_descriptor:
append(self, object, /)
Append object to the end of the list.
(END)
respectively.
However, this "/" does not appear in some other functions, such as print(help(open))
(which returns
Help on built-in function open in module io:
open(file, mode='r', buffering=-1, encoding=None, errors=None, newline=None, clo sefd=True, opener=None)
Open file and return a stream. Raise OSError upon failure.
on a call).
So, given that I cannot pass anything to this parameter, what does it represent?