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[PULL 2/2] trace: avoid "is" with a literal Python 3.8 warnings
From: |
Stefan Hajnoczi |
Subject: |
[PULL 2/2] trace: avoid "is" with a literal Python 3.8 warnings |
Date: |
Mon, 14 Oct 2019 09:57:09 +0100 |
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 <address@hidden>
Reviewed-by: Daniel P. Berrangé <address@hidden>
Reviewed-by: Philippe Mathieu-Daudé <address@hidden>
Message-Id: <address@hidden>
Signed-off-by: Stefan Hajnoczi <address@hidden>
---
scripts/tracetool/__init__.py | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/scripts/tracetool/__init__.py b/scripts/tracetool/__init__.py
index 04279fa62e..44c118bc2a 100644
--- a/scripts/tracetool/__init__.py
+++ b/scripts/tracetool/__init__.py
@@ -456,12 +456,12 @@ def generate(events, group, format, backends,
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):
--
2.21.0