How could I change all columns that have “change_” in the column name? For these columns I want to then conditionally replace rows. Want in general code for a larger dataset Expected Output: Answer Use df.filter to filter out columns and then use df.replace:
Tag: pandas
Converting a multindex dataframe to a nested dictionary [closed]
Closed. This question needs debugging details. It is not currently accepting answers. Edit the question to include desired behavior, a specific problem or error, and the shortest code necessary to reproduce the problem. This will help others answer the question. Closed 2 years ago. Improve this question I hav…
How to make clusters of Pandas data frame?
I am trying to make a cluster of the following pandas data frame and trying to give the names. E.g – “Personal Info” is cluster name and it consist of (PERSON,LOCATION,PHONE_NUMBER,EMAIL_ADDRESS,PASSPORT,SSN, DRIVER_LICENSE) and also addition of there Counts. which will be 460. Clusters: for…
Pandas – Adding individual Z-Scores to each row based on an id
So I have a Pandas data-frame with a game_id, player_id, and playtime column. I would like to add a z-score rating for each row to find how much from the norm, in terms of playtime, they are for each given game. How would I go through and add each one of these scores to a new column for the data-frame?
Convert timeseries csv in Python
I want to convert a CSV file of time-series data with multiple sensors. This is what the data currently looks like: The different sensors are described by numbers and have different numbers of axes. If a new activity is labeled, everything below belongs to this new label. The label is in the same column as th…
Splitting a Column using Pandas
I am trying to split the following column using Pandas: (df name is count) to this desired outcome: I have tried removing the word ‘POINT’, and both the brackets. But then I am met with an extra white space at the beginning of the column. I tried using: But it was not removing the white space. I w…
Find string in data frame and store new values in a new column
I am creating a script that takes a csv file which columns organisation and columns name are unknown. However I know that only one of the column contains some values in which the str ‘rs’ and ‘del’ appears. I need to create an extra column (called ‘Type’) and store ‘d…
Append two dataframes indexed with DateTime that have overlapping elements, keeping the overlaping elements of the second
Problem I have two dataframes that I want to merge. They both have a DateTime index and the measured values overlap for the last two hours of the first and the first two hours of second. I want to …
Estimate a linear trend in every row across multiple columns in order to project the next value
I have five columns of historic data which I’d like to find a linear trend across the columns in every row to project the next value in year 2021/22. The historic data is stored in a data frame as follows: – Index 2016/17 2017/18 2018/19 2019/20 2020/21 0 14.53 13.75 13.03 16.05 15.15 1 14.52 13.7…
Pandas Dataframe keep rows where date is between two dates (seperate columns)
I have a dataframe that looks similar to this : And then I have a list of dates. For example: list = [2020-01-03, 2020-02-04] I would like to keep only the rows of the dataframe where the dates are in between the From column and the To column. So, after transformation I would have the following dataframe. Fir…