I have a DataFrame loaded from a CSV file which I would like to append with a new row of values and then save it back to CSV. However, there are a few characteristics to this DataFrame:
df.loc[datetime] = [value1, value2, .., value_n]
(as mentioned here ), if the index already exists in my DataFrame, all rows containing the same date will be updated with the inputs; One solution I managed to come up with was to create a new 1-row DataFrame from a dict using the original's columns as keys, so I could then apply pd.concat
to add the new row, but I am wondering if there is a simpler and more elegant way to do this?
you can append 1 row, with or without the index:
df = df.append(pd.DataFrame({'value_1':value_1,'value_n':value_n},index=this_index))
df = df.append({'value_1':value_1,'value_n':value_n},ignore_index=True)
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