pip install xlrd
我收到错误消息
Collecting xlrd
Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ConnectTimeoutError(<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x03593510>, 'Connection to pypi.org timed out. (connect timeout=15)')': /simple/xlrd/
这个错误消息重复几次,然后我手动退出。如何安装xlrd?
