我正在尝试使用pdf2image，看来我需要一个叫做propeller：
(sum_env) C:\Users\antoi\Documents\Programming\projects\summarizer>python ocr.py -i fr13_idf.pdf
Traceback (most recent call last):
File "c:\Users\antoi\Documents\Programming\projects\summarizer\sum_env\lib\site-packages\pdf2image\pdf2image.py", line 165, in __page_count
proc = Popen(["pdfinfo", pdf_path], stdout=PIPE, stderr=PIPE)
File "C:\Python37\lib\subprocess.py", line 769, in __init__
restore_signals, start_new_session)
File "C:\Python37\lib\subprocess.py", line 1172, in _execute_child
startupinfo)
FileNotFoundError: [WinError 2] The system cannot find the file specified
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "ocr.py", line 53, in <module>
pdfspliterimager(image_path)
File "ocr.py", line 32, in pdfspliterimager
pages = convert_from_path("document-page%s.pdf" …我已经安装了 3.73 版的 python，但对于 jupyter 笔记本，我安装了3.6.8. 如何在 jupyter notebook 上将 python 升级到 3.7+ 版本？
我试过：
conda update jupyter
conda upgrade notebook
当我在 virtual env python -VI 中输入终端时得到 3.73 但是当我在 jupyter 中检查它时：
from platform import python_version
print(python_version())
我明白了3.6.8。