Fixed littlefs tests to be Py3 compat

Author: Cruz Monrreal II

features/storage/filesystem/littlefs/littlefs/tests/stats.py

@@ -7,24 +7,24 @@
 import re
 
 def main():
-    with open('blocks/config') as file:
+    with open('blocks/config', 'rb') as file:
         s = struct.unpack('<LLLL', file.read())
-        print 'read_size: %d' % s[0]
-        print 'prog_size: %d' % s[1]
-        print 'block_size: %d' % s[2]
-        print 'block_size: %d' % s[3]
+        print('read_size: %d' % s[0])
+        print('prog_size: %d' % s[1])
+        print('block_size: %d' % s[2])
+        print('block_size: %d' % s[3])
 
-    print 'real_size: %d' % sum(
+    print('real_size: %d' % sum(
         os.path.getsize(os.path.join('blocks', f))
-        for f in os.listdir('blocks') if re.match('\d+', f))
+        for f in os.listdir('blocks') if re.match('\d+', f)))
 
-    with open('blocks/stats') as file:
+    with open('blocks/stats', 'rb') as file:
         s = struct.unpack('<QQQ', file.read())
-        print 'read_count: %d' % s[0]
-        print 'prog_count: %d' % s[1]
-        print 'erase_count: %d' % s[2]
+        print('read_count: %d' % s[0])
+        print('prog_count: %d' % s[1])
+        print('erase_count: %d' % s[2])
 
-    print 'runtime: %.3f' % (time.time() - os.stat('blocks').st_ctime)
+    print('runtime: %.3f' % (time.time() - os.stat('blocks').st_ctime))
 
 if __name__ == "__main__":
     main(*sys.argv[1:])