rosdep / rosdepc 更新 urlopen error [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed 解决办法

和python ssl 的 ca-certificates有关

先尝试

sudo apt-get install ca-certificates

如果已经安装过ca-certificates还是无法更新

export SSL_CERT_FILE=/usr/lib/ssl/certs/ca-certificates.crt

ref:

https://github.com/lostisland/faraday/wiki/Setting-up-SSL-certificates

https://answers.ros.org/question/264262/rosdep-update-urlopen-error-ssl-certificate_verify_failed-certificate-verify-failed/