巨坑：ModuleNotFoundError: No module named ‘dateutil‘

ModuleNotFoundError: No module named ‘dateutil’

dateutil安裝失敗：

(pythonThirteen) [xx@hadoop103 bin]$ pip install dateutil
ERROR: Could not find a version that satisfies the requirement dateutil (from versions: none)
ERROR: No matching distribution found for dateutil
(pythonThirteen) [xx@hadoop103 bin]$ pip install dateutil.relativedelta
WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connecton.HTTPSConnection object at 0x7f576ab52ea0>: Failed to establish a new connection: [Errno -2] Name or service not known')': /simple/dateutil-relativedelta/
ERROR: Could not find a version that satisfies the requirement dateutil.relativedelta (from versions: none)
ERROR: No matching distribution found for dateutil.relativedelta

發現要使用命令：

 pip3 install python-dateuti