【发布时间】：2019-02-21 10:40:15
【问题描述】：
每当我尝试通过 pip install <package> 从我的 Amazon EC2 实例安装软件包时，都会遇到以下问题：
pip install opencv-python
Collecting opencv-python
Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLError("bad handshake: Error([('rsa routines', 'INT_RSA_VERIFY', 'bad signature'), ('asn1 encoding routines', 'ASN1_item_verify', 'EVP lib'), ('SSL routines', 'ssl3_get_server_certificate', 'certificate verify failed')],)",),)': /simple/opencv-python/
Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLError("bad handshake: Error([('rsa routines', 'INT_RSA_VERIFY', 'bad signature'), ('asn1 encoding routines', 'ASN1_item_verify', 'EVP lib'), ('SSL routines', 'ssl3_get_server_certificate', 'certificate verify failed')],)",),)': /simple/opencv-python/
Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLError("bad handshake: Error([('rsa routines', 'INT_RSA_VERIFY', 'bad signature'), ('asn1 encoding routines', 'ASN1_item_verify', 'EVP lib'), ('SSL routines', 'ssl3_get_server_certificate', 'certificate verify failed')],)",),)': /simple/opencv-python/
Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLError("bad handshake: Error([('rsa routines', 'INT_RSA_VERIFY', 'bad signature'), ('asn1 encoding routines', 'ASN1_item_verify', 'EVP lib'), ('SSL routines', 'ssl3_get_server_certificate', 'certificate verify failed')],)",),)': /simple/opencv-python/
Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLError("bad handshake: Error([('rsa routines', 'INT_RSA_VERIFY', 'bad signature'), ('asn1 encoding routines', 'ASN1_item_verify', 'EVP lib'), ('SSL routines', 'ssl3_get_server_certificate', 'certificate verify failed')],)",),)': /simple/opencv-python/
Could not fetch URL https://pypi.org/simple/opencv-python/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.org', port=443): Max retries exceeded with url: /simple/opencv-python/ (Caused by SSLError(SSLError("bad handshake: Error([('rsa routines', 'INT_RSA_VERIFY', 'bad signature'), ('asn1 encoding routines', 'ASN1_item_verify', 'EVP lib'), ('SSL routines', 'ssl3_get_server_certificate', 'certificate verify failed')],)",),)) - skipping
Could not find a version that satisfies the requirement opencv-python (from versions: )
No matching distribution found for opencv-python
在上面的示例中，包opencv-python 可在https://pypi.org/project/opencv-python/ 获得。我正在使用 Anaconda 环境中的 Python 3.6。
此外，使用conda install <package> 会导致同样的错误：
conda search numpy
Loading channels: failed
CondaHTTPError: HTTP 000 CONNECTION FAILED for url <https://repo.anaconda.com/pkgs/free/noarch/repodata.json.bz2>
Elapsed: -
An HTTP error occurred when trying to retrieve this URL.
HTTP errors are often intermittent, and a simple retry will get you on your way.
If your current network has https://www.anaconda.com blocked, please file
a support request with your network engineering team.
SSLError(MaxRetryError('HTTPSConnectionPool(host=\'repo.anaconda.com\', port=443): Max retries exceeded with url: /pkgs/free/noarch/repodata.json.bz2 (Caused by SSLError(SSLError("bad handshake: Error([(\'SSL routines\', \'tls_process_key_exchange\', \'bad signature\')],)",),))',),)
不知道是网络接口的问题还是Python环境的问题？我已经尝试了所有找到的解决方案，但没有任何效果。
【问题讨论】：
-
你能连接到任何网络资源吗？
-
是的，我尝试了
wget一个图像，它有效。 -
https 资源呢？
-
pip install为我工作。目前正在下载 39.7 mb 的 opencv-python 4.0.0.21。 -
@Yossi
wget不适用于https，可能是网络设置，谢谢。
标签： python python-3.x pip anaconda