Source Code for Module Chem.Suppliers.MolSupplier

 1  # $Id: MolSupplier.py 2 2006-05-06 22:54:39Z glandrum $ 
 2  # 
 3  # Copyright (C) 2003-2006 greg Landrum and Rational Discovery LLC 
 4  # 
 5  #   @@ All Rights Reserved  @@ 
 6  # 
 7  """ Supplies an abstract class for working with sequences of molecules 
 8   
 9  """ 
10   
11 -class MolSupplier(object): 
12    """ we must, at minimum, support forward iteration 
13   
14    """ 
15 -  def __init__(self): 
16      raise ValueError,'cannot instantiate MolSuppliers' 
17 -  def Reset(self): 
18      pass 
19 -  def __iter__(self): 
20      self.Reset() 
21      return self 
22   
23 -  def next(self): 
24      res = self.NextMol() 
25      if res is not None: 
26        return res 
27      else: 
28        raise StopIteration 
29     
30 -  def NextMol(self): 
31      """   Must be implemented in child class 
32    
33      """ 
34      pass 
35