adjust scanner.py string formatting

examples_linux/scanner.py

@@ -71,17 +71,17 @@ def __init__(  # pylint: disable=too-many-arguments,invalid-name
         self.x, self.y, self.width, self.win, self.color = (x, y, cols, std_scr, color)
         self.win.move(self.y, self.x)
         self.win.attron(curses.color_pair(self.color))
-        self.win.addstr(label)  # always labeled in MHz (4 digits)
+        self.win.addstr(label + " ")  # always labeled in MHz (4 digits)
         for _ in range(self.width - 8):  # draw the empty bar
             self.win.addch(curses.ACS_HLINE)
         self.win.addstr(" - ")  # draw the initial signal count
         self.win.attroff(curses.color_pair(self.color))
 
     def update(self, completed: int, signal_count: int):
         """Update the progress bar."""
-        count = "-"
+        count = " - "
         if signal_count:
-            count = "%X" % min(0xF, signal_count)
+            count = " %X " % min(0xF, signal_count)
         filled = (self.width - 8) * completed / CACHE_MAX
         offset_x = 5
         self.win.move(self.y, self.x + offset_x)
@@ -92,7 +92,7 @@ def update(self, completed: int, signal_count: int):
             self.win.addch("=" if bar_filled else curses.ACS_HLINE)
             self.win.attroff(curses.color_pair(bar_color))
         self.win.attron(curses.color_pair(self.color))
-        self.win.addstr(f" {count} ")
+        self.win.addstr(count)
         self.win.attroff(curses.color_pair(self.color))