---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
<ipython-input-15-be69a1a38ec8> in <module>
----> 1 adf = pd.DataFrame({"x1": ["A", "B", "C"], "x2": [1, 2, 3]})
      2 adf
TypeError: 'dict' object is not callable

상기와 같은 에러가 뜹니다. 왜그러는건가요?