Index: Lib/trace.py
===================================================================
--- Lib/trace.py	(revision 54660)
+++ Lib/trace.py	(working copy)
@@ -100,7 +100,7 @@
                       (Can only be used with --count or --report.)
 
 Filters, may be repeated multiple times:
---ignore-module=<mod> Ignore the given module and its submodules
+--ignore-module=<mod1,mod2,...> Ignore the given modules and each module's submodules
                       (if it is a package).
 --ignore-dir=<dir>    Ignore files in the given directory (multiple
                       directories can be joined by os.pathsep).
@@ -727,7 +727,8 @@
             continue
 
         if opt == "--ignore-module":
-            ignore_modules.append(val)
+            for s in val.split(","):
+                ignore_modules.append(s.strip())
             continue
 
         if opt == "--ignore-dir":
Index: Doc/lib/libtrace.tex
===================================================================
--- Doc/lib/libtrace.tex	(revision 54584)
+++ Doc/lib/libtrace.tex	(working copy)
@@ -61,12 +61,14 @@
 brief summary to stdout for each file processed.
 
 \item[\longprogramopt{ignore-module}]
-Ignore the named module and its submodules (if it is
+Accepts comma separated list of module names.
+Ignore the named modules and each module's submodules (if it is
 a package).  May be given multiple times.
 
 \item[\longprogramopt{ignore-dir}]
 Ignore all modules and packages in the named directory
-and subdirectories.  May be given multiple times.
+and subdirectories (multiple directories can be joined by os.pathsep).  
+May be given multiple times.
 \end{description}
 
 \subsection{Programming Interface\label{trace-api}}