Pandas percentage change matrix Question: I have a data frame: product cost 0 product a 56 1 product b 59 2 product c 104 I’d like to make a percentage change matrix like: product a product b product c product a -5.08% -46.15% product b 5.36% -43.30% product c 85.71% 76.27% There could be n …
Pandas to_excel formatting float values Question: I’m exporting a dataframe to an excel file using to_excel from pandas but I need that all the number values (float64) to be formatted (without specifing each columns because that will be variable) as a string (BRL currency) when exported. import pandas as pd df = pd.DataFrame({‘Numero’: {0: ‘044121’, …
Conditional merging with pandas Question: I have a pandas dataframe as below which details additional calls into an area: CommsDate Area Day0 Incremental Day1 Incremental Day2 Incremental 01/01/24 Sales 43 36 29 01/01/24 Service 85 74 66 02/01/24 Sales 56 42 31 02/01/24 Service 73 62 49 03/01/24 Sales 48 32 24 03/01/24 Service 67 …
How do I concatenate two data frames/arrays where each row must have the same key in Python? Question: I have two CSV files: index,X,Y 1,1.0,2.0 3,1.3,2.3 and index,Z 1,3.0 that I want to read and concatenate into a m x 4 numpy array in Python with the rule that only rows with indices that are …
TKinter – Column width = 0 leaves yellow pixels Question: I am trying to only show certain columns when pressing one of the buttons on the right side, for that reason I implemented to hide the other columns by reducing their column width to 0. While this works for hiding the columns, it leaves yellow …
How to prevent matplotlib from plotting the "day number" on an axis Question: I am seeing a slightly annoying issue when plotting some data with matplotlib. As shown in the example output below, the x-axis has a slightly unexpected format. The labels are (for example) 04 12:30. The 04 being the day of the month. …
apply different function on each row Question: I have a dataframe with 2 columns field and value(number of rows maximum 10). I need to perform some checks depending on the field(ie need to apply different function on each row) and store its result in status column. Below is sample: data = { ‘field’: [‘a’, ‘b’], …
Pandas: Create new column that contains the most recent index where a condition related to the current row is met Question: In the below example, I wish to return the last index ocurrance relative to the current row in which the "lower" was >= the "upper" column. I am able to do this with the …
Interweave groups in Pandas Question: I have a DataFrame that I want "intereaved" row-wise by groups. For example, this DataFrame: Group Score A 10 A 9 A 8 B 7 B 6 B 5 The desired result would be grabbing the first of A, and the first of B, then the second of A, then …
How to diagonally split a cell, and fill in text on both parts in a spreadsheet using python ExcelWriter Question: I have a dataframe with made up values: import pandas as pd df = pd.DataFrame({‘Country|Gender’: ["US", "UK", "Canada"], ‘Male’: [100000, 10000, 1000], ‘Female’: [200000, 20000, 2000]}) Now I am put it to an excel: from …
