Fix lint issues and lint config (#219)

For the two ignored rules:

- E731: It's OK to use lambda
- W504: W503 and W504 are conflicts with each other, we need to disable one of them.

Author: greyli

src/flask_debugtoolbar/panels/profiler.py

@@ -94,15 +94,15 @@ def process_response(self, request, response):
     def title(self):
         if not self.is_active:
             return "Profiler not active"
-        return 'View: %.2fms' % (float(self.stats.total_tt)*1000,)
+        return 'View: %.2fms' % (float(self.stats.total_tt) * 1000,)
 
     def nav_title(self):
         return 'Profiler'
 
     def nav_subtitle(self):
         if not self.is_active:
             return "in-active"
-        return 'View: %.2fms' % (float(self.stats.total_tt)*1000,)
+        return 'View: %.2fms' % (float(self.stats.total_tt) * 1000,)
 
     def url(self):
         return ''

src/flask_debugtoolbar/panels/sqlalchemy.py

@@ -62,8 +62,7 @@ def extension_used():
 
 
 def recording_enabled():
-    return (current_app.debug
-            or current_app.config.get('SQLALCHEMY_RECORD_QUERIES'))
+    return (current_app.debug or current_app.config.get('SQLALCHEMY_RECORD_QUERIES'))
 
 
 def is_available():

src/flask_debugtoolbar/panels/timer.py

@@ -52,8 +52,7 @@ def url(self):
         return ''
 
     def _elapsed_ru(self, name):
-        return (getattr(self._end_rusage, name)
-                - getattr(self._start_rusage, name))
+        return (getattr(self._end_rusage, name) - getattr(self._start_rusage, name))
 
     def content(self):
 

src/flask_debugtoolbar/utils.py

@@ -88,6 +88,7 @@ def format_sql(query, args):
         SqlLexer(),
         HtmlFormatter(noclasses=True, style=PYGMENT_STYLE)))
 
+
 def gzip_compress(data, compresslevel=6):
     buff = io.BytesIO()
     with gzip.GzipFile(fileobj=buff, mode='wb', compresslevel=compresslevel) as f:

test/basic_app.py

@@ -7,7 +7,8 @@
 app.config['SECRET_KEY'] = 'abc123'
 app.config['SQLALCHEMY_RECORD_QUERIES'] = True
 app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///:memory:'
-# This is no longer needed for Flask-SQLAlchemy 3.0+, if you're using 2.X you'll want to define this:
+# This is no longer needed for Flask-SQLAlchemy 3.0+,
+# if you're using 2.X you'll want to define this:
 # app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
 
 # make sure these are printable in the config panel

tox.ini

@@ -17,7 +17,9 @@ commands =
 deps =
     pycodestyle
 commands =
-    pycodestyle flask_debugtoolbar test
+    # E731: do not assign a lambda expression, use a def
+    # W504: line break after binary operator
+    pycodestyle src/flask_debugtoolbar test --ignore=E731,W504
 
 [pycodestyle]
 max-line-length = 100