I have a JSON response which is: I then use pd.json_normalize(Response,’Neighborhoods’) for normalizing. The Location part is then flattened out as I want, as two columns “Location.Lat” and “Location.Lon”. My issue is “ProjectIds” which I get in one column as Bu…
Tag: pandas
python – Append dataframe but remove null column from each table
I have two dataframes in python: df1 Column1 Column2 Column3 Column4 Column5 1a 123 RJ 12.1 test1 2a 432 MT 23.2 test3 3a 234 DR 34.3 test5 df2 Column1 Column3 Column6 1a RJ 695 2a MT 568 3a DR 232 And I wish to append them together and save them as CSV, separated by pipe. But when I simply append,
How to create a nested dictionary from pandas dataframe?
I have the following pandas dataframe that has thousands of rows: I want to create a nested dictionary where people’s names are the keys and the dictionary of their food/drink combination is the value. Something like this: Answer I solved this problem with the following code:
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…
determine chain of predecessors and successor from a list of first predecessor in python
I have a list like the following One item can have multiple immediate incoming ids, like in case of id=3, which is imediately preceeded by id=17 and id=18. I need a python code to determine this result by following the chain of predecessors both ways: (it is best to read the column all_successors to understan…
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 zer…
Why did my code (that was supposed to put in column headers) wipe the whole Excel sheet blank with no headers?
I wrote this simple program for writing column headers to empty cells above a data table in a pre-existing Excel .xlsx file. I don’t get any errors when I run this, but when I open the file (with a single sheet), the whole table is gone and it’s blank; there’s not even any of the headers tha…
How to add a row for subtotal from each group and then a final row of grand total of entries
I have the following dataframe: Location Student Name D Amy D Raj E Mitch F Poo F Mack I am trying to generate the following dataframe: Location Student Name D Amy D Raj Total Students at D 2 E Mitch Total Students at E 1 F Poo F Mack Total Students at F 2 Grand Total 5 How do I
rename a dataframe automatically
I want to automatically rename my dataframe with 3 name ,I tried with this code but it shows me each time only the last name : the result I want to achieve : Answer Can do it dynamically by multiplying the list to repeat it. Then slice by the length of the df.columns
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