trouble using \ to escape %

[Lucas Machado]

I'm writing a python script that modifies the smb.conf file, and i need
to write the characters '%U' in the file.  I tried making a string like
so:

str1 = "[%s%s]\n\tpath = /mnt/samba/%s%s/\%U" % (list[0], list[1],
list[0], list[1])

but i keep getting: "TypeError: not enough arguments for format
string". I've also tried making the string:

str1 = "[%s%s]\n\tpath = /mnt/samba/%s%s/\%" % (list[0], list[1],
list[0], list[1])

but i get: "ValueError: incomplete format". These errors lead me to
believe that for some reason it is not escaping the '%' character.
There has to be a way to write '%' to a file. Thanks in advance..

Cheers
-Lucas Machado

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Re: Win32 drive mapping... aka "net use"

[Lucas Machado]

Roger Upole wrote:
> You could use win32api.GetLogicalDriveStrings to list
> the drive letters currently in use, and find the next free
> letter.  net use * probably does something like that under
> the covers.

I went and took your advice and this is where I am now:

>>> import win32api
>>> a = win32api.GetLogicalDriveStrings()
>>> a
'A:\\\x00C:\\\x00D:\\\x00E:\\\x00Z:\\\x00'
>>> print a
A:\ C:\ D:\ E:\ Z:\

So I think this function will work great since it gives me a string
that i can simply strip away what i don't need and then split it into a
list and traverse the list.  However, when I try to split it, the
following occurs:

>>> b = a.strip(r'\\\x00')
>>> b
'A:\\\x00C:\\\x00D:\\\x00E:\\\x00Z:\\\x00'
>>> b = a.split(r'\\\x00')
>>> b
['A:\\\x00C:\\\x00D:\\\x00E:\\\x00Z:\\\x00']

I'm a bit of a novice at python (even more so of the win32 api), but
I've used the split and strip functions before (for example to get rid
of '\n' from strings) so it is unclear to me why this does not work.

Thanks
--LM

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handling pywintypes.error exceptions

[Lucas Machado]

I'm using the win32 api to map samba shares, and I'm having trouble
handling some exceptions.  In my script there are 2 possible exceptions
when the script attempts to map a share:

>>> win32net.NetUseAdd(None, 1, {'remote':r'\\foo\bar','local':'X
Traceback (most recent call last):
  File "", line 1, in ?
pywintypes.error: (53, 'NetUseAdd', 'The network path was not found.')

This exception occurs when '\\foo\bar' is not an existing share. Also,
when a drive letter is already in use the following occurs:

>>> win32net.NetUseAdd(None, 1,
{'remote':r'\\some_server\share','local':'Y:'})
Traceback (most recent call last):
  File "", line 1, in ?
pywintypes.error: (85, 'NetUseAdd', 'The local device name is already
in use.')

I know the exception raised in these cases is "pywintypes.error", but
how can i differentiate between the two exceptions? Being able to do
this is critical for my script

Thanks in advance,
--Lucas Machado

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Re: Win32 drive mapping... aka "net use"

[Lucas Machado]

I have already seen the "net help use" and i know how to manage samba
shares from a command prompt.  What i need help with is using the win32
api for python to manage shares

--Lucas

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Re: Win32 drive mapping... aka "net use"

[Lucas Machado]

Alex Martelli wrote:

> import win32net
> win32net.NetUseAdd(None,1,{'remote':r'\\server\share','local':'K:'})
>
> is an example (not all that easy to fathom from the docs, but I
> found it out with a little help from the docs, a little from MSDN,
> and a little experimentation).

I looked through the MSDN and was not able to find much information on
how to properly use the NetUseAdd function.  I searched for the
function and looked through the results but all it showed was some data
structure, but i was actually looking for a list of all possible
arguments and which arguments were/were not required.

my problem with the above NetUseAdd example is that I would rather not
have to specify a device.  In the script I am writing the user may
choose to map multiple shares so I need to be able to map to the next
available device:

net use * \\some_server\share_name

instead of:

net use k: \\server\share

Thanks for the help in advance.  Also, if anyone could provide a link
to good windows api docs for python that would be great.

Cheers,
--Lucas Machado

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