[pitivi] Fix pylint anomalous-backslash-in-string

[Thibault Saunier <tsaunier src gnome org>]

commit c84a5ee7ea512ddd2e9636b7fbf9a587b83b201d
Author: Alexandru Băluț <alexandru balut gmail com>
Date:   Wed Oct 30 23:58:40 2019 +0100

    Fix pylint anomalous-backslash-in-string

 pitivi/utils/widgets.py | 4 ++--
 tests/test_project.py   | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/pitivi/utils/widgets.py b/pitivi/utils/widgets.py
index 22493df3..bf7418c4 100644
--- a/pitivi/utils/widgets.py
+++ b/pitivi/utils/widgets.py
@@ -308,7 +308,7 @@ class TimeWidget(TextWidget, DynamicWidget):
     # The "timecode" rule is ^([0-9]:[0-5][0-9]:[0-5][0-9])\.[0-9][0-9][0-9]$"
     # Combining the two, we get:
     VALID_REGEX = re.compile(
-        "^([0-9]+)$|^([0-9]:)?([0-5][0-9]:[0-5][0-9])\.[0-9][0-9][0-9]$")
+        r"^([0-9]+)$|^([0-9]:)?([0-5][0-9]:[0-5][0-9])\.[0-9][0-9][0-9]$")
 
     __gtype_name__ = 'TimeWidget'
 
@@ -370,7 +370,7 @@ class FractionWidget(TextWidget, DynamicWidget):
     """Widget for entering a fraction."""
 
     fraction_regex = re.compile(
-        "^([0-9]*(\.[0-9]+)?)(([:/][0-9]*(\.[0-9]+)?)|M)?$")
+        r"^([0-9]*(\.[0-9]+)?)(([:/][0-9]*(\.[0-9]+)?)|M)?$")
     __gtype_name__ = 'FractionWidget'
 
     def __init__(self, presets=None, default=None):
diff --git a/tests/test_project.py b/tests/test_project.py
index 3ee668f3..202ecb71 100644
--- a/tests/test_project.py
+++ b/tests/test_project.py
@@ -324,7 +324,7 @@ class TestProjectLoading(common.TestCase):
         """Loads a project with missing proxies."""
         uris = [common.get_sample_uri("1sec_simpsons_trailer.mp4")]
         proxy_uri = uris[0] + ".232417.proxy.mkv"
-        PROJECT_STR = """<ges version='0.3'>
+        PROJECT_STR = r"""<ges version='0.3'>
   <project properties='properties;' metadatas='metadatas, name=(string)&quot;New\ Project&quot;, 
author=(string)Unknown, render-scale=(double)100;'>
     <encoding-profiles>
     </encoding-profiles>
@@ -490,7 +490,7 @@ class TestProjectLoading(common.TestCase):
         app = common.create_pitivi(proxyingStrategy=ProxyingStrategy.ALL)
         app.proxy_manager.connect("proxy-ready", proxy_ready_cb)
 
-        proj_uri = self.create_project_file_from_xges("""<ges version='0.3'>
+        proj_uri = self.create_project_file_from_xges(r"""<ges version='0.3'>
   <project properties='properties;' metadatas='metadatas, name=(string)&quot;New\ Project&quot;, 
author=(string)Unknown, render-scale=(double)100, format-version=(string)0.3;'>
     <ressources>
       <asset id='file:///nop/1sec_simpsons_trailer.mp4' extractable-type-name='GESUriClip' 
properties='properties, supported-formats=(int)6, duration=(guint64)1228000000;' metadatas='metadatas, 
audio-codec=(string)&quot;MPEG-4\ AAC\ audio&quot;, maximum-bitrate=(uint)130625, bitrate=(uint)130625, 
datetime=(datetime)2007-02-19T05:03:04Z, encoder=(string)Lavf54.6.100, container-format=(string)&quot;ISO\ 
MP4/M4A&quot;, video-codec=(string)&quot;H.264\ /\ AVC&quot;, file-size=(guint64)232417;'  
proxy-id='file:///nop/1sec_simpsons_trailer.mp4.232417.proxy.mkv' />