Document.__init__() got an unexpected keyword argument 'encoding'

[DeltaFlyerW]

Description of the bug

doc.subset_fonts(verbose=True, fallback=True)

raise

Traceback (most recent call last):
    doc.subset_fonts(verbose=True, fallback=True)  # build subset fonts to reduce file size
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "venv\Lib\site-packages\pymupdf\__init__.py", line 7710, in subset_fonts
    new_buffer = build_subset(old_buffer, subsets[0], subsets[1])
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "venv\Lib\site-packages\pymupdf\__init__.py", line 7562, in build_subset
    with open(f"{tmp_dir}/uncfile.txt", "w", encoding='utf8') as unc_file:
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
TypeError: Document.__init__() got an unexpected keyword argument 'encoding'

How to reproduce the bug

This issue seems to be caused by the open attr is override in pymupdf.init.py

PyMuPDF version

1.26.6

Operating system

Windows

Python version

3.11

[DeltaFlyerW]

Temporory fix:

pymupdf.open = open

[julian-smith-artifex-com]

Thanks for reporting this. I have a fix in my tree.

We will close this issue when the fix is released.