Pytessaract图像到pdf函数在AWS lambda中不工作

我使用此存储库将tesseract部署为lambda层: https://github.com/bweigel/aws-lambda-tesseract-layer

pytesseract 就像: image_to_string image_to_data 也工作得很好,没有任何打嗝。

image_to_pdf_or_hocr 这样地:

pdf = pytesseract.image_to_pdf_or_hocr(f'/tmp/{file_name}/{page.number}.png', extension='pdf')

它不工作并抛出错误,如:

Traceback (most recent call last):
File "/var/task/helpers/ocr_helper.py", line 36, in save_searchable_pdf
f'/tmp/{file_name}/{page.number}.png', extension='pdf')
File "/var/task/pytesseract/pytesseract.py", line 432, in image_to_pdf_or_hocr
return run_and_get_output(*args)
File "/var/task/pytesseract/pytesseract.py", line 289, in run_and_get_output
with open(filename, 'rb') as output_file:
FileNotFoundError: [Errno 2] No such file or directory: '/tmp/tess_6_hu78b0.pdf'

1. 上面说档案 tess_6_hu78b0.pdf 不存在。这是什么意思?我没有你的档案 tess_6_hu78b0
2. 我要走的路

我试过:

我找到了需要安装的地方 libtesseract-dev

FROM lambci/lambda:build-python3.6
RUN sudo apt install tesseract-ocr
RUN sudo apt install libtesseract-dev

但不幸的是,这也没有起作用。