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Tag: dataframe

Splitting a dataframe with many labels

I’m trying to split my data by different labels, like this: And this works fine for small amounts of numbers. However, I want to do this for many values. for example: This spits outs an error: ValueError: The truth value of a Series is ambiguous. Use a.empty, a.bool(), a.item(), a.any() or a.all(). I’ve read the other questions with this error,

Test for First Occurrence of Conditions in Python Dataframe

Background Pretty new to Python and dataframes. I’m on a Mac (Sierra) running Jupyter Notebook in Firefox (87.0). I’ve got a dataframe like this: I want to add a Boolean column to this dataframe that checks whether a) the price in this row is zero and b) if it’s the first occurrence of a zero price for this subgroup (reading

Select all row where all columns are equal to value

I have a pandas dataframe and I need to select the rows where all the columns are equal to 0.00. How can I do that? Answer First, we’ll setup some example data to work on – here there are 3 columns, but it could be more, or fewer in your example. And define a function that accepts a row from

Column merge and shift elements in a Dataframe row

I have a dataframe as follows: In the last row (and several others in the full dataframe) the negative signs are misplaced. My question is if a negative sign is there at i-th position then it should merge i+1 th element and shift all other row elements to the left such that it the final output should be Answer Setup

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