[Python-ideas] Allow manual creation of DirEntry objects

[Victor Stinner]

2016-08-17 1:50 GMT+02:00 Guido van Rossum <guido at python.org>:
> We could expose the class with a
> constructor that always fails (the C code could construct instances through
> a backdoor).

Oh, in fact you cannot create an instance of os.DirEntry, it has no
(Python) constructor:

$ ./python
Python 3.6.0a4+ (default:e615718a6455+, Aug 17 2016, 00:12:17)
>>> import os
>>> os.DirEntry(1)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: cannot create 'posix.DirEntry' instances

Only os.scandir() can produce such objects.

The question is still if it makes sense to allow to create DirEntry
objects in Python :-)


> Also, what does the scandir package mentioned by the OP use as the
> constructor signature?

The implementation of os.scandir() comes from the scandir package. It
contains the same code, and so has the same behaviour (DirEntry has no
constructor).

Victor