I would like to enhance the class pathlib.Path
but the simple example above dose not work.
from pathlib import Path
class PPath(Path):
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
test = PPath("dir", "test.txt")
Here is the error message I have.
Traceback (most recent call last):
File "/Users/projetmbc/test.py", line 14, in <module>
test = PPath("dir", "test.txt")
File "/anaconda/lib/python3.4/pathlib.py", line 907, in __new__
self = cls._from_parts(args, init=False)
File "/anaconda/lib/python3.4/pathlib.py", line 589, in _from_parts
drv, root, parts = self._parse_args(args)
File "/anaconda/lib/python3.4/pathlib.py", line 582, in _parse_args
return cls._flavour.parse_parts(parts)
AttributeError: type object 'PPath' has no attribute '_flavour'
What I am doing wrong ?
You can subclass the concrete implementation, so this works:
class Path(type(pathlib.Path())):
Here's what I did with this:
import pathlib
class Path(type(pathlib.Path())):
def open(self, mode='r', buffering=-1, encoding=None, errors=None, newline=None):
if encoding is None and 'b' not in mode:
encoding = 'utf-8'
return super().open(mode, buffering, encoding, errors, newline)
Path('/tmp/a.txt').write_text("я")