I have a pandas data frame which looks like this Name Index1 Index2 AAA 67 70 Aaa 55 80 Abb 32 20 BBB 84 45 Baa 80 70 Bbb 13 40 where some rows have names with all uppercase and some with lowercase. How can i create another dataframe with only the uppercase rows expected output will be : Name
Tag: pandas
Check values greater than int with condition Pandas
Say, I have this dataframe: t = pd.DataFrame(data={“Pos”: [1, 2, 3], “A”: [10, 2, 90], “B”:[90, 98, 10]}) I would like to know which of the (values in A and B >= 20) but only if (Pos = 1 or 3). The result should look like this: I can find the values >= 20 using t[[…
How do I apply Sympy.Solve to solve a two-sided function on each row in a database?
I am attempting to apply the sympy.solve function to each row in a DataFrame using each column a different variable. I have managed to solve for the undefined variable I need to calculate — λ — using the following code: However, I need to apply this function to every row in a DataFrame and output …
Mutiple style for one DataFrame issues
I would like to understand how “style” works in python, I always have the same error : AttributeError: ‘Styler’ object has no attribute …. for now, I manage to have : the first row in yellow but not the conditional formatting (df_x0) and the conditional formatting blue and orange…
Pandas merge only on where condition
Please help with logic on applying merge function only where condition is met. In below example: merge should be applicable only when, np.where name = John, else show 0 Expected result: TIA Answer use merge and select the good rows of your df2.
Select numerical column header names
I have a data frame with column names in numbers 1 to 99, i use integer names to loop for different activities. Datetime in index Is there anyway to call the column header 2 & 8 without converting to string header. Convert integer column name to string name Trial 1 Trial 2 Answer Is there anyway to call t…
Grouping of a dataframe monthly after calculating the highest daily values
I’ve got a dataframe with two columns one is datetime dataframe consisting of dates, and another one consists of quantity. It looks like something like this, I want to make another dataframe. It should consist of two columns one is Month/Year and the other is Till Highest. I basically want to calculate …
create an array or dataframe using different variables from nested for loop in python
How do I create an array or dataframe to store seedN, clf.score(X_test, y_test),n_neighbors? Answer Create a temporary empty list to store the results : For each fit, add a new list with the desired values : Finally, create the dataframe with this temporary list :
Pandas method to back extend a time series by repeating the first value
Is there a method to extend a pandas time series into the past repeating the first value found in the serie?. For example: And I want an extended series I’m asking if exists a direct method. Answer Let’s try reindex and bfill or use fill_value argument of reindex as mozway kindly pointing out.
Remove DataFrames from a list of DataFrames
I have a dataframe that looks like this one: I am implementing K-Neighbors Algorithm with Pandas and Numpy and when getting a list of dataframes, I can’t remove the one I am looping on with a list. How to remove the one I am looping on from the list so I can concatenate the remaining ones on cross fold …