Better handling of eval errors in modules/eval_python.py

modules/eval_python.py

@@ -2,12 +2,24 @@ import html, socket
 from src import ModuleManager, utils
 
 EVAL_TEMPLATE = """
-import sys
+import StringIO, sys
+
 compiled = compile(sys.stdin.read(), "code", "single")
-result = eval(compiled)
+
-print("")
+old_stdout = sys.stdout
+stdout = StringIO.StringIO()
+sys.stdout = stdout
+
+try:
+    result = eval(compiled)
+except Exception as e:
+    old_stdout.write(json.dumps({"success" False, "out": str(e)}))
+    sys.exit()
+
+stdout.write("\n")
 if not result == None:
-    sys.stdout.write(str(result))
+    stdout.write(str(result)+"\n")
+old_stdout.write(json.dumps({"success" True, "out": stdout.getvalue()}))
 """
 
 EVAL_URL = "https://tpcg.tutorialspoint.com/tpcg.php"