```txt
H:\Python39\Scripts>pip install pymupdf
Requirement already satisfied: pymupdf in h:\python39\lib\site-packages (1.24.0)
Requirement already satisfied: PyMuPDFb==1.24.0 in h:\python39\lib\site-packages (from pymupdf) (1.24.0)
H:\Python39\Scripts>pdf2zh "C:\Users\missd\Documents\WeChat Files\wxid_7fuavyde1oyk12\FileStorage\File\2024-10\Category Theory for Scientists--MIT_18.S996.pdf"
Traceback (most recent call last):
File "H:\Python39\lib\
runpy.py", line 197, in _run_module_as_main
return _run_code(code, main_globals, None,
File "H:\Python39\lib\
runpy.py", line 87, in _run_code
exec(code, run_globals)
File "H:\Python39\Scripts\pdf2zh.exe\
__main__.py", line 4, in <module>
File "H:\Python39\lib\site-packages\pdf2zh\
pdf2zh.py", line 11, in <module>
import pymupdf
ModuleNotFoundError: No module named 'pymupdf'
```