Added pypy support

ucompile

@@ -122,7 +122,14 @@ def run_input_cases(program, args):
 
 
 def python_compile(file_name, args):
-    run_input_cases("python3 " + file_name, args)
+    try:
+        if subprocess.run(["which", "pypy3"]).returncode == 0:
+            run_input_cases("pypy3 " + file_name, args)
+            return
+    except Exception:
+        pass
+    finally:
+        run_input_cases("python3 " + file_name, args)
     return