df = pd.DataFrame({'a': [1, 2, 3, 4, 5, 6], 'b': [1, 1, 2, 3, 5, 8], 'c': [1, 4, 9, 16, 25, 36]}) df.diff()
# 计算某一列差值 df.c.diff(1)
https://pandas.pydata.org/docs/reference/api/pandas.DataFrame.diff.html