[util] Move compatibility functions out of util

utils is large enough without these compatibility functions.

Everything that is present in newer versions of Python (i.e. with dev Python it's just an import) goes into compat.py .
Everything else (i.e. youtube-dl-specific helpers) goes into utils.py .

4 files changed, 11 insertions, 9 deletions

diff --git a/youtube_dl/postprocessor/atomicparsley.py b/youtube_dl/postprocessor/atomicparsley.py
index 765b2d9ee..448ccc5f3 100644
--- a/youtube_dl/postprocessor/atomicparsley.py
+++ b/youtube_dl/postprocessor/atomicparsley.py
@@ -6,10 +6,11 @@ import os
 import subprocess
 
 from .common import PostProcessor
-
+from ..compat import (
+    compat_urlretrieve,
+)
 from ..utils import (
     check_executable,
-    compat_urlretrieve,
     encodeFilename,
     PostProcessingError,
     prepend_extension,
diff --git a/youtube_dl/postprocessor/execafterdownload.py b/youtube_dl/postprocessor/execafterdownload.py
index 08419a3d4..baf1b1945 100644
--- a/youtube_dl/postprocessor/execafterdownload.py
+++ b/youtube_dl/postprocessor/execafterdownload.py
@@ -3,10 +3,8 @@ from __future__ import unicode_literals
 import subprocess
 
 from .common import PostProcessor
-from ..utils import (
-    shlex_quote,
-    PostProcessingError,
-)
+from ..compat import shlex_quote
+from ..utils import PostProcessingError
 
 
 class ExecAfterDownloadPP(PostProcessor):
diff --git a/youtube_dl/postprocessor/ffmpeg.py b/youtube_dl/postprocessor/ffmpeg.py
index 338c145fa..f3f2743c0 100644
--- a/youtube_dl/postprocessor/ffmpeg.py
+++ b/youtube_dl/postprocessor/ffmpeg.py
@@ -1,5 +1,4 @@
 import os
-import re
 import subprocess
 import sys
 import time
@@ -7,8 +6,10 @@ import time
 
 from .common import AudioConversionError, PostProcessor
 
-from ..utils import (
+from ..compat import (
     compat_subprocess_get_DEVNULL,
+)
+from ..utils import (
     encodeArgument,
     encodeFilename,
     get_exe_version,
diff --git a/youtube_dl/postprocessor/xattrpp.py b/youtube_dl/postprocessor/xattrpp.py
index f6940940b..b5cae41c8 100644
--- a/youtube_dl/postprocessor/xattrpp.py
+++ b/youtube_dl/postprocessor/xattrpp.py
@@ -3,10 +3,12 @@ import subprocess
 import sys
 
 from .common import PostProcessor
+from ..compat import (
+    subprocess_check_output
+)
 from ..utils import (
     check_executable,
     hyphenate_date,
-    subprocess_check_output
 )