#17: fix python 3 support

ffmpeg/__init__.py

@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
+
 from . import _filters, _ffmpeg, _run
 from ._filters import *
 from ._ffmpeg import *
 from ._run import *
+
 __all__ = _filters.__all__ + _ffmpeg.__all__ + _run.__all__

ffmpeg/_ffmpeg.py

@@ -1,4 +1,5 @@
 from __future__ import unicode_literals
+
 from .nodes import (
     filter_operator,
     GlobalNode,

ffmpeg/_filters.py

@@ -1,4 +1,5 @@
 from __future__ import unicode_literals
+
 from .nodes import (
     FilterNode,
     filter_operator,

ffmpeg/_utils.py

@@ -1,4 +1,8 @@
-import hashlib
+from __future__ import unicode_literals
+
+from builtins import str
+from past.builtins import basestring
+import hashlib
 
 
 def _recursive_repr(item):

ffmpeg/dag.py

@@ -1,3 +1,5 @@
+from __future__ import unicode_literals
+
 from ._utils import get_hash, get_hash_int
 from builtins import object
 from collections import namedtuple
@@ -72,14 +74,14 @@ def incoming_edge_map(self):
 
 def get_incoming_edges(downstream_node, incoming_edge_map):
     edges = []
-    for downstream_label, (upstream_node, upstream_label) in incoming_edge_map.items():
+    for downstream_label, (upstream_node, upstream_label) in list(incoming_edge_map.items()):
         edges += [DagEdge(downstream_node, downstream_label, upstream_node, upstream_label)]
     return edges
 
 
 def get_outgoing_edges(upstream_node, outgoing_edge_map):
     edges = []
-    for upstream_label, downstream_infos in outgoing_edge_map.items():
+    for upstream_label, downstream_infos in list(outgoing_edge_map.items()):
         for (downstream_node, downstream_label) in downstream_infos:
             edges += [DagEdge(downstream_node, downstream_label, upstream_node, upstream_label)]
     return edges
@@ -91,7 +93,7 @@ class KwargReprNode(DagNode):
     @property
     def __upstream_hashes(self):
         hashes = []
-        for downstream_label, (upstream_node, upstream_label) in self.incoming_edge_map.items():
+        for downstream_label, (upstream_node, upstream_label) in list(self.incoming_edge_map.items()):
             hashes += [hash(x) for x in [downstream_label, upstream_node, upstream_label]]
         return hashes
 

ffmpeg/nodes.py

@@ -1,5 +1,6 @@
 from __future__ import unicode_literals
 
+from builtins import object
 from .dag import KwargReprNode
 from ._utils import get_hash_int
 
@@ -49,7 +50,7 @@ def __check_input_len(cls, stream_map, min_inputs, max_inputs):
 
     @classmethod
     def __check_input_types(cls, stream_map, incoming_stream_types):
-        for stream in stream_map.values():
+        for stream in list(stream_map.values()):
             if not _is_of_types(stream, incoming_stream_types):
                 raise TypeError('Expected incoming stream(s) to be of one of the following types: {}; got {}'
                     .format(_get_types_str(incoming_stream_types), type(stream)))
@@ -69,7 +70,7 @@ def __get_stream_map(cls, stream_spec):
     @classmethod
     def __get_incoming_edge_map(cls, stream_map):
         incoming_edge_map = {}
-        for downstream_label, upstream in stream_map.items():
+        for downstream_label, upstream in list(stream_map.items()):
             incoming_edge_map[downstream_label] = (upstream.node, upstream.label)
         return incoming_edge_map