Use f-strings

sebastinas · sebastinas · commit d89793e365da · 2021-03-28T22:22:23.000+02:00
diff --git a/bpython/keys.py b/bpython/keys.py
@@ -52,14 +52,14 @@ def __setitem__(self, key, value):
 
 # fill dispatch with letters
 for c in string.ascii_lowercase:
-    cli_key_dispatch["C-%s" % c] = (
+    cli_key_dispatch[f"C-{c}"] = (
         chr(string.ascii_lowercase.index(c) + 1),
-        "^%s" % c.upper(),
+        f"^{c.upper()}",
     )
 
 for c in string.ascii_lowercase:
-    urwid_key_dispatch["C-%s" % c] = "ctrl %s" % c
-    urwid_key_dispatch["M-%s" % c] = "meta %s" % c
+    urwid_key_dispatch[f"C-{c}"] = f"ctrl {c}"
+    urwid_key_dispatch[f"M-{c}"] = f"meta {c}"
 
 # fill dispatch with cool characters
 cli_key_dispatch["C-["] = (chr(27), "^[")
@@ -70,7 +70,7 @@ def __setitem__(self, key, value):
 
 # fill dispatch with function keys
 for x in range(1, 13):
-    cli_key_dispatch["F%d" % x] = ("KEY_F(%d)" % x,)
+    cli_key_dispatch[f"F{x}"] = (f"KEY_F({x})",)
 
 for x in range(1, 13):
-    urwid_key_dispatch["F%d" % x] = "f%d" % x
+    urwid_key_dispatch[f"F{x}"] = f"f{x}"
