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generator already executing

See original GitHub issue

Describe the bug ValueError: generator already executing

To Reproduce Make a lot of conversion maybe?

Expected behavior No error

Desktop (please complete the following information):

OS: Docker python:3.7-stretch
Version 1.11.0

Code:

Where pdf var is a typing.IO[bytes] stream

pdf_content = pdf.read() 
images = convert_from_bytes(pdf_content)

Output:

File "/usr/local/lib/python3.7/site-packages/****, line ****, in ****
images = convert_from_bytes(pdf_content)
File "/usr/local/lib/python3.7/site-packages/pdf2image/pdf2image.py", line 269, in convert_from_bytes
 paths_only=paths_only,
 File "/usr/local/lib/python3.7/site-packages/pdf2image/pdf2image.py", line 144, in convert_from_path
thread_output_file = next(output_file)
ValueError: generator already executing

Issue Analytics

State:
Created 4 years ago
Comments:8 (4 by maintainers)

Top GitHub Comments

1reaction

Belvalcommented, Jan 17, 2020

The timeout is a good idea, if the problem is reported again I will consider adding one by default or at least making it a parameter.

1reaction

L3o-poldcommented, Jan 14, 2020

It came from this project https://github.com/algoo/preview-generator/blob/develop/preview_generator/preview/builder/pdf__pypdf2.py#L56

On top of that I have a multithreaded webserver.

CRITICAL:root:generator already executing
Traceback (most recent call last):
  File "script.py", line 70, in get_thumbnail
    image_path, height=payload.get('height', 200), width=payload.get('width', 200)
  File "/usr/local/lib/python3.7/site-packages/preview_generator/manager.py", line 176, in get_jpeg_preview
    mimetype=mimetype,
  File "/usr/local/lib/python3.7/site-packages/preview_generator/preview/builder/pdf__pypdf2.py", line 56, in build_jpeg_preview
    result = convert_pdf_to_jpeg(output_stream, size)
  File "/usr/local/lib/python3.7/site-packages/preview_generator/preview/builder/image__wand.py", line 20, in convert_pdf_to_jpeg
    images = convert_from_bytes(pdf_content)
  File "/usr/local/lib/python3.7/site-packages/pdf2image/pdf2image.py", line 269, in convert_from_bytes
    paths_only=paths_only,
  File "/usr/local/lib/python3.7/site-packages/pdf2image/pdf2image.py", line 144, in convert_from_path
    thread_output_file = next(output_file)
ValueError: generator already executing