[Tutor] Problem with file()

[Bernard Lebel]

Hello,

I'm writing a little module that has few classes, and each classes few
functions. The first class has a function that allows to read a text file
and add the entries of the text to a list, and the list is returned.

When I do the operation with command line in PythonWin, without the class
and function definitions, no problem. When I import the module and run the
function, I get an error:

oExtList = file( sListPath, 'r' )

Traceback (most recent call last):
  File "<interactive input>", line 1, in ?
  File "C:\Python23\lib\ClientsManager\__init__.py", line 104, in getextlist
    oExtList = file( sListPath, 'r' )
TypeError: this constructor takes no arguments

I call the function this way:
import ClientsManager as cm
cl = cm.client()
aClients = cl.getextlist()



Duh?


Here is the full code:



class client:

 def getextlist( self, aClients = [], sListPath = '', iOp = 2 ):

  """
  Will modify an existing client list using an external file list.
  You can choose to add to the list or remove from the list the clients
  listed in the external list.

  For instances, user computers on a floor generally give a non-standard
  name to their computer, so you might find convenient to add/remove their
names
  to the aClients list by querying an external file with the list of
computer names.

  iOp specifies the operation to perform:
  0: append
  1: remove
  """

  if sListPath == '':
   sListPath = raw_input( 'Full path to external list (use "\\\\" to
separate directories): ' )

  if iOp < 0 or iOp > 1:
   iOp = int( raw_input( 'Type of operation (0-append, 1-remove): ' ) )

  if iOp < 0 or iOp > 1:
   print ( 'You must enter 0 or 1!' )
  else:
   if not os.path.exists( sListPath ):
    print 'Provided list path invalid'
   else:
    # Get list file
    oExtList = file( sListPath )

    # Get list elements
    aExtList = oExtList.readlines()

    # Remove end of lines characters
    for sClient1 in aExtList:
     sClient2 = sClient1.strip( '\n' )

     if iOp == 0:
      aClients.append( sClient2 )
     else:
      aClients.remove( sClient2 )

    return aClients



Thanks
Bernard