Index: zipfile.py
===================================================================
--- zipfile.py	(revision 82467)
+++ zipfile.py	(working copy)
@@ -622,7 +622,7 @@
 
 
 class ZipFile:
-    """ Class with methods to open, read, write, close, list zip files.
+    """ Class with methods to open, read, write, remove, close, list zip files.
 
     z = ZipFile(file, mode="r", compression=ZIP_STORED, allowZip64=False)
 
@@ -689,6 +689,7 @@
                 self._RealGetContents()
                 # seek to start of directory and overwrite
                 self.fp.seek(self.start_dir, 0)
+                self.fp.truncate()
             except BadZipfile:          # file is not a zip file, just append
                 self.fp.seek(0, 2)
         else:
@@ -1106,6 +1107,31 @@
         self.filelist.append(zinfo)
         self.NameToInfo[zinfo.filename] = zinfo
 
+    def remove(self, member):
+        """Remove a member from the archive."""
+
+        zinfo = self.getinfo(member)
+
+        # compute the location of the file data in the local file header,
+        # by adding the lengths of the records before it
+        zlen = len(zinfo.FileHeader()) + zinfo.compress_size
+        fileidx = self.filelist.index(zinfo)
+        fileofs = sum(
+            [len(self.filelist[f].FileHeader()) + self.filelist[f].compress_size
+            for f in xrange(0, fileidx)]
+            )
+
+        self.fp.seek(fileofs + zlen)
+        after = self.fp.read()
+        self.fp.seek(fileofs)
+        self.fp.write(after)
+        self.fp.seek(-zlen, 2)
+        self.fp.truncate()
+
+        self._didModify = True
+        self.filelist.remove(zinfo)
+        del self.NameToInfo[member]
+
     def __del__(self):
         """Call the "close()" method in case the user forgot."""
         self.close()