Test escape coma

Author: Christophe Mehay

ffmpeg/nodes.py

@@ -67,7 +67,8 @@ def __getitem__(self, index):
         if self.selector is not None:
             raise ValueError('Stream already has a selector: {}'.format(self))
         elif not isinstance(index, basestring):
-            raise TypeError("Expected string index (e.g. 'a'); got {!r}".format(index))
+            raise TypeError(
+                "Expected string index (e.g. 'a'); got {!r}".format(index))
         return self.node.stream(label=self.label, selector=index)
 
     @property
@@ -235,7 +236,8 @@ def __getitem__(self, item):
 class FilterableStream(Stream):
     def __init__(self, upstream_node, upstream_label, upstream_selector=None):
         super(FilterableStream, self).__init__(
-            upstream_node, upstream_label, {InputNode, FilterNode}, upstream_selector
+            upstream_node, upstream_label, {
+                InputNode, FilterNode}, upstream_selector
         )
 
 
@@ -284,28 +286,27 @@ def _get_filter(self, outgoing_edges):
 
         out_args = [escape_chars(x, '\\\'=:') for x in args]
         out_kwargs = {}
-        escape_coma = ','
         for k, v in list(kwargs.items()):
             k = escape_chars(k, '\\\'=:')
             if isinstance(v, dict):
                 v = ','.join(['{}={}'.format(
                     escape_chars(vk, '\\\'=:'),
                     escape_chars(v[vk], '\\\'=:')
                 ) for vk in sorted(v)])
-                escape_coma = ''
             else:
                 v = escape_chars(v, '\\\'=:')
             out_kwargs[k] = v
 
         arg_params = [escape_chars(v, '\\\'=:') for v in out_args]
-        kwarg_params = ['{}={}'.format(k, out_kwargs[k]) for k in sorted(out_kwargs)]
+        kwarg_params = ['{}={}'.format(k, out_kwargs[k])
+                        for k in sorted(out_kwargs)]
         params = arg_params + kwarg_params
 
         params_text = escape_chars(self.name, '\\\'=:')
 
         if params:
             params_text += '={}'.format(':'.join(params))
-        return escape_chars(params_text, '\\\'[];{}'.format(escape_coma))
+        return escape_chars(params_text, '\\\'[];,')
 
 
 # noinspection PyMethodOverriding
@@ -368,7 +369,8 @@ def __init__(self, stream, name, args=[], kwargs={}):
 def stream_operator(stream_classes={Stream}, name=None):
     def decorator(func):
         func_name = name or func.__name__
-        [setattr(stream_class, func_name, func) for stream_class in stream_classes]
+        [setattr(stream_class, func_name, func)
+         for stream_class in stream_classes]
         return func
 
     return decorator