在Python中安装IBM_WATSON库时出错

Question

跑步时

pip install ibm_watson

我得到下面的错误。我使用的是最新的anaconda和最新的python版本3.9.2

Could not fetch URL https://pypi.org/simple/ibm-watson/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.org', port=443): Max retries exceeded with url: /simple/ibm-watson/ (Caused by SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1123)'))) - skipping

WARNING: 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: unable to get local issuer certificate (_ssl.c:1123)'))': /simple/ibm-watson/
WARNING: 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: unable to get local issuer certificate (_ssl.c:1123)'))': /simple/ibm-watson/
WARNING: 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: unable to get local issuer certificate (_ssl.c:1123)'))': /simple/ibm-watson/
WARNING: 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: unable to get local issuer certificate (_ssl.c:1123)'))': /simple/ibm-watson/
WARNING: 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: unable to get local issuer certificate (_ssl.c:1123)'))': /simple/ibm-watson/

ERROR: Could not find a version that satisfies the requirement ibm_watson

ERROR: No matching distribution found for ibm_watson

Could not fetch URL https://pypi.org/simple/pip/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.org', port=443): Max retries exceeded with url: /simple/pip/ (Caused by SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1123)'))) - skipping 

Answer 1

根据stacktrace中的错误原因判断，此问题似乎与ibm watson库无关：

'[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1123)'

首先检查OPENSSLDIR（或操作系统中相应的环境变量）是否设置为包含tls证书的正确路径。如果您正在使用macOS，请检查以下答案：https://stackoverflow.com/a/53310545/15385777

您还可以尝试将pip更新到最新版本，并在检查是否可以安装ibm watson之前先安装certifi：

python -m pip install  upgrade pip
pip install certifi
pip install ibm-watson

我希望这个答案对你有帮助