Added lines storing

src/configobj/__init__.py

@@ -472,6 +472,8 @@ def _initialise(self):
         self.default_values = {}
         self.extra_values = []
         self._created = False
+        # for lines
+        self.lines = {}
 
 
     def _interpolate(self, key, value):
@@ -514,7 +516,7 @@ def _check(entry):
         return val
 
 
-    def __setitem__(self, key, value, unrepr=False):
+    def __setitem__(self, key, value, unrepr=False, lines=None):
         """
         Correctly set a value.
 
@@ -571,7 +573,8 @@ def __setitem__(self, key, value, unrepr=False):
                 else:
                     raise TypeError('Value is not a string "%s".' % value)
             dict.__setitem__(self, key, value)
-
+            if(lines != None):
+                self.lines[key]=lines
 
     def __delitem__(self, key):
         """Remove items from the sequence when deleting."""
@@ -582,6 +585,7 @@ def __delitem__(self, key):
             self.sections.remove(key)
         del self.comments[key]
         del self.inline_comments[key]
+        del self.lines[key]
 
 
     def get(self, key, default=None):
@@ -1591,6 +1595,7 @@ def _parse(self, infile):
             # it's not a section marker,
             # so it should be a valid ``key = value`` line
             mat = self._keyword.match(line)
+            start_line=cur_index
             if mat is None:
                 self._handle_error(
                     'Invalid line ({0!r}) (matched as neither section nor keyword)'.format(line),
@@ -1654,7 +1659,7 @@ def _parse(self, infile):
                 # add the key.
                 # we set unrepr because if we have got this far we will never
                 # be creating a new section
-                this_section.__setitem__(key, value, unrepr=True)
+                this_section.__setitem__(key, value, unrepr=True, lines=(start_line,cur_index))
                 this_section.inline_comments[key] = comment
                 this_section.comments[key] = comment_list
                 continue