I upgraded to ArcGIS Pro 1.4 and I get an error when trying to import arcpy.

PhilipWoods1

Getting the following error message when trying to use arcpy.

Runtime error
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "c:\program files\arcgis\pro\Resources\arcpy\arcpy\__init__.py", line 69, in <module>
from arcpy.toolbox import *
File "c:\program files\arcgis\pro\Resources\arcpy\arcpy\toolbox.py", line 688, in <module>
from .wmx import ClearJobReplicationInfo as ClearJobReplicationInfo_wmx
File "c:\program files\arcgis\pro\Resources\arcpy\arcpy\wmx.py", line 29, in <module>
from arcpy import _wmx
File "c:\program files\arcgis\pro\Resources\arcpy\arcpy\_wmx.py", line 9, in <module>
from dateutil import tz
ImportError: cannot import name 'tz'

PhilipWoods1

Working through the error message it appears that not all of the dateutil package modules were loaded into the arcgispro-py3 environment. Once this was done everything worked as expected.