The following statement produces a SyntaxWarning with Python 3.8:
if len(format) is 0:
scripts/tracetool/__init__.py:459: SyntaxWarning: "is" with a literal. Did you mean "=="?
Use the conventional len(x) == 0 syntax instead.
Reported-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <
20191010122154.10553-1-stefanha@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
import tracetool
format = str(format)
- if len(format) is 0:
+ if len(format) == 0:
raise TracetoolError("format not set")
if not tracetool.format.exists(format):
raise TracetoolError("unknown format: %s" % format)
- if len(backends) is 0:
+ if len(backends) == 0:
raise TracetoolError("no backends specified")
for backend in backends:
if not tracetool.backend.exists(backend):