Description of problem:

When using v2.5.1 on RHEL 7, I get the following error:
ImportError: cannot import name NoValue

This stems from the fact that v2.5.1 includes commit b54f4e987e53e10457229c7a2bb2bb39c19de0bd, which adds the following line unnecessarily:
from pyasn1.type.univ import NoValue

The version pysan1 in RHEL 7 doesn't have this import.

To fix this, either update to v2.5.2, where commit ba1c24f9605dc004e8231e8ed857aa434d75e45e removes that import, or include that commit as a patch.


Version-Release number of selected component (if applicable):

2.5.1-2


Steps to Reproduce:
1. yum install python-ldap3
2. python -c "import ldap3"

Actual results:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python2.7/site-packages/ldap3/__init__.py", line 138, in <module>
    from .core.connection import Connection
  File "/usr/lib/python2.7/site-packages/ldap3/core/connection.py", line 37, in <module>
    from ..extend import ExtendedOperationsRoot
  File "/usr/lib/python2.7/site-packages/ldap3/extend/__init__.py", line 45, in <module>
    from .standard.whoAmI import WhoAmI
  File "/usr/lib/python2.7/site-packages/ldap3/extend/standard/whoAmI.py", line 27, in <module>
    from pyasn1.type.univ import NoValue
ImportError: cannot import name NoValue


Expected results:

Importing ldap3 on RHEL 7 should not traceback.

Additional info: