[LyX/master] Converters: slightly more pythonic code.

[Thibaut Cuvelier]

commit e4065cc1b1394c61108735611e0ebf02b12e6bbe
Author: Thibaut Cuvelier <tcuvelier at lyx.org>
Date:   Wed Sep 16 04:02:51 2020 +0200

    Converters: slightly more pythonic code.
---
 lib/scripts/convertDefault.py |   14 +++++++-------
 1 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/lib/scripts/convertDefault.py b/lib/scripts/convertDefault.py
index c927713..5287e96 100644
--- a/lib/scripts/convertDefault.py
+++ b/lib/scripts/convertDefault.py
@@ -25,7 +25,7 @@ re_version = re.compile(r'^Version:.*ImageMagick\s*(\d*)\.(\d*)\.(\d*).*$')
 command = 'magick'
 fout = os.popen('magick -version 2>&1')
 output = fout.readline()
-if fout.close() != None:
+if fout.close() is not None:
     # older versions
     # caution: windows has a convert.exe for converting file systems
     command = 'convert'
@@ -39,7 +39,7 @@ version = re_version.match(output)
 im = False
 gm = False
 
-if version != None:
+if version is not None:
     major = int(version.group(1))
     minor = int(version.group(2))
     patch = int(version.group(3))
@@ -49,7 +49,7 @@ else:
     # Try GraphicsMagick
     re_version = re.compile(r'^GraphicsMagick.*http:..www.GraphicsMagick.org.*$')
     version = re_version.match(output)
-    if version != None:
+    if version is not None:
         gm = True
         # we need version to be a valid integer 3-tuple
         version = (1,0,0)
@@ -72,10 +72,10 @@ if sys.argv[3] == 'ppm' and (im and version >= (6,3,5) or gm):
 
 # print (command, sys.argv[2], sys.argv[4], file= sys.stdout)
 if (im or gm) and os.system(r'%s %s "%s" %s "%s"' % (command, sopts, sys.argv[2], topts, sys.argv[3] + ':' + sys.argv[4])) != 0:
-    print (sys.argv[0], 'ERROR', file= sys.stderr)
-    print ('Execution of "%s" failed.' % command, file= sys.stderr)
+    print(sys.argv[0], 'ERROR', file= sys.stderr)
+    print('Execution of "%s" failed.' % command, file= sys.stderr)
     sys.exit(1)
 elif not im and not gm and sys.platform == 'darwin' and os.system(r'%s "%s" "%s"' % (command, sys.argv[2], sys.argv[4])) != 0:
-    print (sys.argv[0], 'ERROR', file= sys.stderr)
-    print ('Execution of "%s" failed.' % command, file= sys.stderr)
+    print(sys.argv[0], 'ERROR', file= sys.stderr)
+    print('Execution of "%s" failed.' % command, file=sys.stderr)
     sys.exit(1)