Generator expressons are ok now.

--HG--
branch : 4.0

1 files changed, 2 insertions, 2 deletions

diff --git a/coverage/misc.py b/coverage/misc.py
index 70606287..2a36d5c1 100644
--- a/coverage/misc.py
+++ b/coverage/misc.py
@@ -57,7 +57,7 @@ def format_lines(statements, lines):
 def short_stack():
     """Return a string summarizing the call stack."""
     stack = inspect.stack()[:0:-1]
-    return "\n".join(["%30s : %s @%d" % (t[3],t[1],t[2]) for t in stack])
+    return "\n".join("%30s : %s @%d" % (t[3],t[1],t[2]) for t in stack)
 
 
 def expensive(fn):
@@ -86,7 +86,7 @@ def bool_or_none(b):
 def join_regex(regexes):
     """Combine a list of regexes into one that matches any of them."""
     if len(regexes) > 1:
-        return "|".join(["(%s)" % r for r in regexes])
+        return "|".join("(%s)" % r for r in regexes)
     elif regexes:
         return regexes[0]
     else: