Looping through an Excel spreadsheet (using openpyxl)

Question

import openpyxl wb=openpyxl.load_workbook('Book_1.xlsx') ws=wb['Sheet_1']

I am trying to analyze an excel spreadsheet using openpyxl. My goal is to get the max number from column D for each group of numbers in column A. I would like help in getting a code to loop for the analysis. Here is an example of the spreadsheet that I am trying to analyze. The file name is Book 1 and the sheet name is Sheet 1. I am running Python 3.6.1, pandas 0.20.1, and openpyxl 2.4.7. I am providing the code I have so far.

Answer 1

IIUC, use pandas module to achieve this:

import pandas as pd
df = pd.read_excel('yourfile.xlsx')
maxdf = df.groupby('ID').max()

maxdf will have the result you are looking for.

Answer 2

Let's say you have file test.xlsx with worksheet ws1. Try:

from openpyxl import load_workbook
wb = load_workbook(filename='test.xlsx')
ws = wb['ws1']

for col in ws.columns:
    col_max = 0
    for cell in col:
        if cell.value > col_max:
            col_max = cell.value
    print('next max:', col_max)

I'm looping over all the rows because I'm not sure what you've expected.