pip is configured with locations that require TLS/SSL, however the ssl module in Python is not avail_however the ssl module in python is not available.

  找公司新开了一个云主机CentOS release 6.8，pip3安装库的时候报pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available.

python3 -m pip install markupsafe
pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available.
Collecting markupsafe
  Could not fetch URL https://pypi.python.org/simple/markupsafe/: There was a problem confirming the ssl certificate: Can't connect to HTTPS URL because the SSL module is not available. - skipping
  Could not find a version that satisfies the requirement markupsaf
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