pbar now updates every second even when no update on bar length

searchtest.py

@@ -266,7 +266,7 @@ class pbar(object):
         self.size = get_terminal_size().columns - reserved_size - 24 - 1
         self.len = self.size * (len(self.chars) - 1)
         self.old = -1
-        self.start_time = time.time()
+        self.old_time = self.start_time = time.time()
         self.update(0)
 
     def format_time(self, sec):
@@ -278,10 +278,11 @@ class pbar(object):
         beg = self.len * cur // self.top
         if beg==self.len and cur<self.top:
             beg -= 1
-        if beg==self.old:
+        cur_time = time.time()
+        if beg==self.old and cur_time<self.old_time+1:
             return
         self.old = beg
-        cur_time = time.time()
+        self.old_time = cur_time
         prefix, char = divmod(beg, len(self.chars) - 1)
         character = "" if prefix == self.size else self.chars[char]
         suffix = self.size - prefix - 1