I want to compare each list in the list of lists with the list based on the fact that each element is an interval and if that interval from “Listoflists” is included inside the interval from “List” we would get a True statement or else it would be a False one. And if possible, get in o…
Tag: dataframe
Substract two row values in dataframe python
Currently I have a sort of dataframe where I want to substract value from current row from the previous one. example: df = pd.Datafame([1,4,3,5,6],columns = [“time”)]) left 1 4 3 5 6 I want to iterate over these rows and store it in a list. So the list will get like this [-3,1,-2,-1]. So far I hav…
Fill Dataframe with values from another Dataframe (not the same column names)
I’m trying to fill a empty dataframe (OutputData) in Python with values from another dataframe (InputData). InputData has four columns (“Strike”, “DTE”, “IV”, “Pred_IV”) OutputData has as an index all unique Strikes from InputData and as Column names all u…
how to sum values in a new column, based on conditions and occurrence of the same value in col (value recurrence) as a factor
I’m trying to find a way to update values in a new column having written a piece of code that in every step (row by row) displays the sum of buy/sell orders with the best price. Because of updates that may occur for a particular id, I need to find a way to use this factor to proper populate new
Data type assigned inside nested for loop isn’t as expected
I get the error: AttributeError: ‘float’ object has no attribute ‘lower’ When trying to compile this triple nested for loop: df_row_list is a list of 18 series. I am trying to iterate through it and comb through the data. How do I assign the str data type to row_item_data so that I can…
Issue w/ pandas.index.get_loc() when match is found, TypeError: (“‘>’ not supported between instances of ‘NoneType’ and ‘str'”, ‘occurred at index 1’)
Below is the example to reproduce the error: The desired output should be a list or array with the values [3,NaN,4,3]. The NaN because it does not satisfy the criteria. I checked the pandas references and it says that for cases when you do not have an exact match you can change the “method” to …
Why the rank function is not working when I set axis=1?
I have this code: The code is working as it is but is not returning What I want. I was trying to rank num considering only it’s row so I tried to change this line: to: But it didn’t work. What am i missing here? Answer Building on what you already have here: we could add the Rank column as
Split column into multiple columns with unique values in pandas
I have the following dataframe: which needs to be turned into: Answer Using pandas.concat: For python < 3.8: Output: NB. add fillna(”) to have empty strings for missing values
Remove characters from column
I am trying to remove “0” and “:” from a column in a dataframe. The code I use is, Output: The result does not remove “0” and “:” How can I go about this? Answer You’re missing to assignment of the replacement back to the original column: Though you can ca…
Pandas merge stop at first match like vlookup instead of duplicating
I have two tables, PO data and commodity code data. Some genius decided that some material group codes should be the same as they are differentiated at a lower level by GL accounts. Because of that, I can’t merge on material groups, as I’ll get duplicate rows. Assume the following: As you can see,…