problem writing to file

[Roeland Rengelink]

Christian Maus wrote:
> 
> Hi,
> 
> I have a strange problem when I try to write to a file. I created a list
> named named new_ldapentries. I create a file object in write mode:
>                 testfile = open('/tmp/testfile', 'w')
> then I go through the elements of my list and try to write them to the
> file:
>                 for i in range(len(new_ldapentries)):
>                         testfile.write(new_ldapentries[i])
>                 testfile.close()
> When I run the script I get the following error:
>                 Exception in Tkinter callback
>                 Traceback (innermost last):
>                   File "/usr/lib/python1.5/lib-tk/Tkinter.py", line 764, in __call__
>                     return apply(self.func, args)
>                   File "python/emailmanager.py", line 333, in writeLDAPentry
>                     testfile.write(new_ldapentries[line])
>                 TypeError: read-only buffer, instance
> 
> The strange thing is when I replace the new_ldapentries[line] with any
> String like 'hello' everything works fine.
> 
> Has anybody a idea where I made a mistake?
> Thanks in advance, christian

Hi Christian,

Are you sure that new_ldapentries contains strings.
If not, something like

testfile.write(str(new_ldapentries[line])+'\n')

should work. (Note the '\n' which is a special newline character)

By the way, you could write the loop also as:

for ldap_entry in new_ldapentries:
    testfile.write(str(ldap_entry)+'\n')

Hope this helps,

Roeland Rengelink

-- 
r.b.rigilink at chello.nl

"Half of what I say is nonsense. Unfortunately I don't know which half"