[Bug]: FileNotFoundError: [Errno 2] No such file or directory: 'gs'

459737087 commented 1 month ago

What were you trying to do?

import ocrmypdf

if name == 'main': # To ensure correct behavior on Windows and macOS ocrmypdf.ocr('线索.pdf', 'output.pdf', deskew=True)

Where are you installing/running from?

PyPI (pip, poetry, pipx, etc.)

OCRmyPDF version

ocrmypdf 16.4.2.dev8+g5256e74d

What operating system are you working on?

Linux

Operating system details and version

22.04

Simple sanity checks

[X] Operating system is currently supported by its vendor (not end of life)
[X] Python version is compatible with OCRmyPDF
[X] This issue is not about a specific input file

Relevant log output

The program 'gs' could not be executed or was not found on your
system PATH.

Traceback (most recent call last):
  File "/output/.venv/lib/python3.10/site-packages/ocrmypdf/subprocess/__init__.py", line 158, in get_version
    proc = run(
  File "/output/.venv/lib/python3.10/site-packages/ocrmypdf/subprocess/__init__.py", line 62, in run
    proc = subprocess_run(args, env=env, check=check, **kwargs)
  File "/usr/local/envs/yourEnv/lib/python3.10/subprocess.py", line 503, in run
    with Popen(*popenargs, **kwargs) as process:
  File "/usr/local/envs/yourEnv/lib/python3.10/subprocess.py", line 971, in __init__
    self._execute_child(args, executable, preexec_fn, close_fds,
  File "/usr/local/envs/yourEnv/lib/python3.10/subprocess.py", line 1863, in _execute_child
    raise child_exception_type(errno_num, err_msg, err_filename)
FileNotFoundError: [Errno 2] No such file or directory: 'gs'

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/output/untitled.py", line 4, in <module>
    ocrmypdf.ocr('线索.pdf', 'output.pdf', deskew=True)
  File "/output/.venv/lib/python3.10/site-packages/ocrmypdf/api.py", line 379, in ocr
    check_options(options, plugin_manager)
  File "/output/.venv/lib/python3.10/site-packages/ocrmypdf/_validation.py", line 237, in check_options
    _check_plugin_options(options, plugin_manager)
  File "/output/.venv/lib/python3.10/site-packages/ocrmypdf/_validation.py", line 230, in _check_plugin_options
    plugin_manager.hook.check_options(options=options)
  File "/output/.venv/lib/python3.10/site-packages/pluggy/_hooks.py", line 513, in __call__
    return self._hookexec(self.name, self._hookimpls.copy(), kwargs, firstresult)
  File "/output/.venv/lib/python3.10/site-packages/pluggy/_manager.py", line 120, in _hookexec
    return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
  File "/output/.venv/lib/python3.10/site-packages/pluggy/_callers.py", line 139, in _multicall
    raise exception.with_traceback(exception.__traceback__)
  File "/output/.venv/lib/python3.10/site-packages/pluggy/_callers.py", line 103, in _multicall
    res = hook_impl.function(*args)
  File "/output/.venv/lib/python3.10/site-packages/ocrmypdf/builtin_plugins/ghostscript.py", line 53, in check_options
    check_external_program(
  File "/output/.venv/lib/python3.10/site-packages/ocrmypdf/subprocess/__init__.py", line 324, in check_external_program
    found_version = version_checker()
  File "/output/.venv/lib/python3.10/site-packages/ocrmypdf/_exec/ghostscript.py", line 72, in version
    return Version(get_version(GS))
  File "/output/.venv/lib/python3.10/site-packages/ocrmypdf/subprocess/__init__.py", line 169, in get_version
    raise MissingDependencyError(
ocrmypdf.exceptions.MissingDependencyError: Could not find program 'gs' on the PATH

jbarlow83 commented 1 month ago

Is Ghostscript installed? sudo apt install ghostscript