无法在Python 3.7中导入"PyPDF2" [英] Cannot import 'PyPDF2' in Python 3.7

问题描述

我想知道，为什么我一生无法导入和使用Python 3.7中的PyPDF2(PDF库).

I am wondering, why, for the life of me I cannot import and use PyPDF2 (PDF library) in Python 3.7.

首先，我的导入操作在main.py(即下面)的顶部失败

Firstly, my import fails at top of main.py (i.e. below)

from PyPDF2 import PdfFileReader

然后我尝试了pip install PyPDF2和变体pip2 install PyPDF3等，等等.

Then I have tried pip install PyPDF2 and variants pip2 install PyPDF3 etc etc.

所有均导致以下输出:

  Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: self signed certificate in certificate chain (_ssl.c:1051)'))': /simple/pypdf2/
  Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: self signed certificate in certificate chain (_ssl.c:1051)'))': /simple/pypdf2/
  Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: self signed certificate in certificate chain (_ssl.c:1051)'))': /simple/pypdf2/
  Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: self signed certificate in certificate chain (_ssl.c:1051)'))': /simple/pypdf2/
  Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: self signed certificate in certificate chain (_ssl.c:1051)'))': /simple/pypdf2/

  Could not find a version that satisfies the requirement PyPDF2 (from versions: )
No matching distribution found for PyPDF2

推荐答案

您可以执行以下操作:

pip install https://pypi.org/project/PyPDF2/1.23/

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