Output to spreadsheet without filling in row headers until header name changes?

Starting with the following dictionary:

    test_dict = {'header1_1': {'header2_1': {'header3_1': {'header4_1': ['322.5', 330.0, -0.28],
        'header4_2': ['322.5', 332.5, -0.26]},
       'header3_2': {'header4_1': ['285.0', 277.5, -0.09],
        'header4_2': ['287.5', 277.5, -0.12]}},
      'header2_2': {'header3_1': {'header4_1': ['345.0', 357.5, -0.14],
        'header4_2': ['345.0', 362.5, -0.14]},
       'header3_2': {'header4_1': ['257.5', 245.0, -0.1],
        'header4_2': ['257.5', 240.0, -0.08]}}}}

I want the headers in the index, so I reform the dictionary:

    reformed_dict = {}
    for outerKey, innerDict in test_dict.items():
        for innerKey, innerDict2 in innerDict.items():
            for innerKey2, innerDict3 in innerDict2.items():
                for innerKey3, values in innerDict3.items():
                    reformed_dict[(outerKey,
                            innerKey, innerKey2, innerKey3)] = values

And assign column names to the headers:

    keys = reformed_dict.keys()
    values = reformed_dict.values()
    index = pd.MultiIndex.from_tuples(keys, names=["H1", "H2", "H3", "H4"])
    df = pd.DataFrame(data=values, index=index)

That gets to a dataframe that looks like this:

Issue: When I write this dataframe to Google Sheets using gspread-pandas:

    s.open_sheet('test')
    Spread.df_to_sheet(s, df, index=True, headers=True, start='A8', replace=False) 

The table looks like this:

Would it be possible to manipulate the dataframe to get written to spreadsheet like this:

[aiguofer]

I just pushed some changes to reset the merged cells before making the request to merge again… this should solve that.

One thing to note is that when you’re updating the data with less rows, the rest of the rows that were previously there are not cleared out. I ended up adding a replace flag to df_to_sheet to ensure there were no issues with lingering data. However, that does resize the spreadsheet to only the cells needed to fit the data.

[aiguofer]

Thanks for pointing that out! I might do a little more testing to ensure at least the merged indexes update correctly on a second run with an updated DF