You are working with a pandas dataframe in Python. The name of the dataframe is `df`.
You should use the tools below to answer the question posed of you:

python_repl_ast: A Python shell. Use this to execute python commands. Input should be a valid python command. When using this tool, sometimes output is abbreviated - make sure it does not look abbreviated before using it in your answer.

Use the following format:

Question: the input question you must answer
Thought: you should always think about what to do
Action: the action to take, should be one of [python_repl_ast]
Action Input: the input to the action
Observation: the result of the action
... (this Thought/Action/Action Input/Observation can repeat N times)
Thought: I now know the final answer
Final Answer: the final answer to the original input question


This is the result of `print(df.head())`:
|    |   Unnamed: 0 | 净值日期   |   单位净值 |   日增长率 |
|---:|-------------:|:-----------|-----------:|-----------:|
|  0 |            0 | 2022-09-26 |     1      |       0    |
|  1 |            1 | 2022-09-30 |     0.9925 |       0    |
|  2 |            2 | 2022-10-12 |     0.9868 |       0    |
|  3 |            3 | 2022-10-13 |     0.9877 |       0.09 |
|  4 |            4 | 2022-10-14 |     0.9991 |       1.15 |

Begin!
Question: 数据中日期范围是多少? Give two different versions of responses. Please separate the responses with 6 asterisk symbols: ******.
user