Rollup merge of #112499 - tgross35:py-ruff-fixes, r=Mark-Simulacrum

Fix python linting errors

These were flagged by `ruff`, run using the config in rust-lang/rust#112482

Author: compiler-errors

core/src/unicode/printable.py

@@ -119,7 +119,7 @@ def print_singletons(uppers, lowers, uppersname, lowersname):
     print("#[rustfmt::skip]")
     print("const {}: &[u8] = &[".format(lowersname))
     for i in range(0, len(lowers), 8):
-        print("    {}".format(" ".join("{:#04x},".format(l) for l in lowers[i:i+8])))
+        print("    {}".format(" ".join("{:#04x},".format(x) for x in lowers[i:i+8])))
     print("];")
 
 def print_normal(normal, normalname):