[python-ldap] Modlist with a replace sometimes fails

[Michael Ströder]

William wrote:
> I noticed that the code for modlist does the following:
> 
> line 111: 
>       if replace_attr_value:
>         modlist.append((ldap.MOD_DELETE,attrtype,None))
>         modlist.append((ldap.MOD_ADD,attrtype,new_value))
> 
> This often fails on certain ldap servers, especially with configuration
> directives as they cannot be removed before the add takes place.

Could you please give more details:
- LDAP server vendor and exact version
- attribute for which this fails

> I would like to ask that either this be fixed to:
> 
> line 111: 
>       if replace_attr_value:
>         modlist.append((ldap.MOD_REPLACE,attrtype,new_value))

It's probably time to add that to the FAQ:

https://mail.python.org/pipermail/python-ldap/2008q3/002342.html

Note that you don't have to use ldap.modlist.modifyModlist() and your
application can generate your own modlist when tweaking special attributes.

Ciao, Michael.

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