When an exception happened inside the try clause in serialize_function, a new exception was raised in the except clause subsequently: Traceback (most recent call last): File "./apibuild.py", line 2529, in <module> rebuild("libvirt") File "./apibuild.py", line 2513, in rebuild builder.serialize() File "./apibuild.py", line 2467, in serialize self.serialize_function(output, function) File "./apibuild.py", line 2208, in serialize_function self.warning("Failed to save function %s info: " % name, `id.info`) TypeError: warning() takes exactly 2 arguments (3 given) Use the correct number of arguments for self.warning and print the original exception to stderr. Signed-off-by: Claudio Bley <cbley(a)av-test.de&gt; --- docs/apibuild.py | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/docs/apibuild.py b/docs/apibuild.py index 91dabf8..2d72936 100755 --- a/docs/apibuild.py +++ b/docs/apibuild.py @@ -2198,7 +2198,8 @@ class docBuilder: output.write(" <arg name='%s' type='%s' info='%s'/>\n" % (param[1], param[0], escape(param[2]))) self.indexString(name, param[2]) except: - self.warning("Failed to save function %s info: " % name, `id.info`) + print >>sys.stderr, "Exception:", sys.exc_info()[1] + self.warning("Failed to save function %s info: %s" % (name, `id.info`)) output.write(" </%s>\n" % (id.type)) def serialize_exports(self, output, file): -- 1.7.9.5