utils: pep8 fixes

wa/utils/doc.py

@@ -264,7 +264,7 @@ def format_literal(lit):
     elif hasattr(lit, 'pattern'):  # regex
         return '``r\'{}\'``'.format(lit.pattern)
     elif isinstance(lit, dict):
-        content = indent(',\n'.join("{}: {}".format(key,val) for (key,val) in lit.items()))
+        content = indent(',\n'.join("{}: {}".format(key, val) for (key, val) in lit.items()))
         return '::\n\n{}'.format(indent('{{\n{}\n}}'.format(content)))
     else:
         return '``{}``'.format(lit)

wa/utils/exec_control.py

@@ -31,6 +31,7 @@ def activate_environment(name):
         init_environment(name)
     __active_environment = name
 
+
 def init_environment(name):
     """
     Create a new environment called ``name``, but do not set it as the
@@ -44,6 +45,7 @@ def init_environment(name):
         raise ValueError(msg)
     __environments[name] = []
 
+
 def reset_environment(name=None):
     """
     Reset method call tracking for environment ``name``. If ``name`` is
@@ -63,6 +65,7 @@ def reset_environment(name=None):
             activate_environment('default')
         __environments[__active_environment] = []
 
+
 # The decorators:
 def once_per_instance(method):
     """
@@ -81,6 +84,7 @@ def once_per_instance(method):
 
     return wrapper
 
+
 def once_per_class(method):
     """
     The specified method will be invoked only once for all instances
@@ -100,6 +104,7 @@ def once_per_class(method):
 
     return wrapper
 
+
 def once(method):
     """
     The specified method will be invoked only once within the

wa/utils/misc.py

@@ -521,7 +521,6 @@ def merge_sequencies(s1, s2):
     return type(s2)(unique(chain(s1, s2)))
 
 
-
 def merge_maps(m1, m2):
     return type(m2)(chain(iter(m1.items()), iter(m2.items())))
 
@@ -604,6 +603,7 @@ def resolve_cpus(name, target):
             msg = 'Unexpected core name "{}"'
             raise ValueError(msg.format(name))
 
+
 @memoized
 def resolve_unique_domain_cpus(name, target):
     """

wa/utils/serializer.py

@@ -100,6 +100,7 @@ POD_TYPES = [
     cpu_mask,
 ]
 
+
 class WAJSONEncoder(_json.JSONEncoder):
 
     def default(self, obj):  # pylint: disable=method-hidden
@@ -190,13 +191,16 @@ def _wa_regex_representer(dumper, data):
     text = '{}:{}'.format(data.flags, data.pattern)
     return dumper.represent_scalar(_regex_tag, text)
 
+
 def _wa_level_representer(dumper, data):
     text = '{}:{}'.format(data.name, data.level)
     return dumper.represent_scalar(_level_tag, text)
 
+
 def _wa_cpu_mask_representer(dumper, data):
     return dumper.represent_scalar(_cpu_mask_tag, data.mask())
 
+
 def _wa_dict_constructor(loader, node):
     pairs = loader.construct_pairs(node)
     seen_keys = set()
@@ -212,11 +216,13 @@ def _wa_regex_constructor(loader, node):
     flags, pattern = value.split(':', 1)
     return re.compile(pattern, int(flags or 0))
 
+
 def _wa_level_constructor(loader, node):
     value = loader.construct_scalar(node)
     name, value = value.split(':', 1)
     return level(name, value)
 
+
 def _wa_cpu_mask_constructor(loader, node):
     value = loader.construct_scalar(node)
     return cpu_mask(value)
@@ -317,9 +323,9 @@ def _read_pod(fh, fmt=None):
         if fmt == '':
             # Special case of no given file extension
             message = ("Could not determine format " +
-            "from file extension for \"{}\". ".format(getattr(fh, 'name', '<none>')) +
-            "Please specify it or modify the fmt parameter.")
-            raise ValueError(message)
+                       "from file extension for \"{}\". "
+                       "Please specify it or modify the fmt parameter.")
+            raise ValueError(message.format(getattr(fh, 'name', '<none>')))
     if fmt == 'yaml':
         return yaml.load(fh)
     elif fmt == 'json':
@@ -344,7 +350,7 @@ def _write_pod(pod, wfh, fmt=None):
 
 
 def is_pod(obj):
-    if  type(obj) not in POD_TYPES:
+    if type(obj) not in POD_TYPES:
         return False
     if hasattr(obj, 'items'):
         for k, v in obj.items():

wa/utils/trace_cmd.py

@@ -25,6 +25,7 @@ from wa.utils.types import numeric
 
 logger = logging.getLogger('trace-cmd')
 
+
 class TraceCmdEvent(object):
     """
     A single trace-cmd event. This will appear in the trace cmd report in the format ::
@@ -231,7 +232,7 @@ EMPTY_CPU_REGEX = re.compile(r'CPU \d+ is empty')
 
 class TraceCmdParser(object):
     """
-    A parser for textual representation of ftrace as reported by trace-cmd 
+    A parser for textual representation of ftrace as reported by trace-cmd
 
     """
 
@@ -240,7 +241,7 @@ class TraceCmdParser(object):
         Initialize a new trace parser.
 
         :param filter_markers: Specifies whether the trace before the start
-                               marker and after the stop marker should be 
+                               marker and after the stop marker should be
                                filtered out (so only events between the two
                                markers will be reported). This maybe overriden
                                based on `check_for_markers` parameter of

wa/utils/types.py

@@ -212,10 +212,12 @@ __counters = defaultdict(int)
 def reset_counter(name=None, value=0):
     __counters[name] = value
 
+
 def reset_all_counters(value=0):
     for k in __counters:
         reset_counter(k, value)
 
+
 def counter(name=None):
     """
     An auto incrementing value (kind of like an AUTO INCREMENT field in SQL).
@@ -534,7 +536,7 @@ class level(object):
 
     @staticmethod
     def from_pod(pod):
-        name, value_part =  pod.split('(')
+        name, value_part = pod.split('(')
         return level(name, numeric(value_part.rstrip(')')))
 
     def __init__(self, name, value):
@@ -578,7 +580,6 @@ class level(object):
             return self.value != other
 
 
-
 class _EnumMeta(type):
 
     def __str__(cls):