make showf method work outside of zsh

the {n…n} glob pattern does not work outside of zsh

itten/movie.py

@@ -32,7 +32,7 @@ class Movie(object):
         self.fps = fps
         self.fsize = self._frames.frm_cnt
 
-    def showf(self, start, end=0, type='time', mltp=1, viewer='sxiv -t'):
+    def showf(self, start, end=0, type='time', mltp=1, viewer='eog'):
         """Opens frames within the given timespan in an image viewer
 
            start : timestamp of the start position [hh:]mm:ss or
@@ -54,14 +54,13 @@ class Movie(object):
             start = int(start) * mltp
             end = int(end) * mltp
 
-        # Popen sxiv with Path and image count
-        if '_0' in str(self._frames.frames[0]):
-            glob = self._frames.folder + self._frames.prefix + '{' + '{0:04d}'.format(start) + '..'\
-                    + '{0:04d}'.format(end) + '}' + '.png'
-        else:
-            glob = self._frames.folder + self._frames.prefix + '{' + str(start) + '..'\
-                + str(end) + '}' + '.png'
-        cmd = viewer + ' ' + glob
+        # funktioniert nur in zsh
+        # glob = self._frames.folder + self._frames.prefix + '{' + '{0:05d}'.format(start) + '..' + '{0:05d}'.format(end) + '}' + '.png'
+        glob_lst = []
+        for frm in range(start, end+1):
+            glob_lst.append(self._frames.folder + self._frames.prefix + '{0:05d}'.format(frm) + '.png')
+
+        cmd = viewer + ' ' + ' '.join(glob_lst)
         Popen(cmd, stdout=PIPE, stderr=STDOUT, shell=True)
 
         return True