Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/usr/lib/python2.7/py_compile.py", line 117, in compile
    raise py_exc
py_compile.PyCompileError:   File "/in/foo.py", line 11
    dish_name = f"菜品{i}"  # 假设菜品用“菜品1”，“菜品2”等命名
                           ^
SyntaxError: invalid syntax