Python，将Excel文件加载到字典

Question

I'm losing my mind here. I don't get why it saves only the last row to the dictionary. I want to save the whole excel table to Dictionary so I can group those values by Key(columnName) and then do something with those values so I can access each cell based on the row number.

import openpyxl
from pathlib import Path

data = {}
data['dict1'] = {}

xlsx_file = Path(Path.home(), 'FormaterPythonUniversity', 'Template.xlsx')


wb_obj = openpyxl.load_workbook(xlsx_file) 

# Read the active sheet:
sheet = wb_obj.active


for i, row in enumerate(sheet.iter_rows(values_only=True)):
    data['Full Name'] = row[0]
    print(row[0])
    data['dict1']['Work email address'] = row[1]
    data['dict1']['Start date'] = row[2]
    data['dict1']['Manager name'] = row[3]
    data['dict1']['Manager email address'] = row[4]
    data['dict1']['Category'] = row[5]
     
print(data)      

What happens now is that only the last row of the excel file is being stored in this dictionary.

Example Output:

{'dict1': {'Work email address': 'smth.@gmail.com', 'Start date': '2021-11-11', 'Manager name': 'Paul Smth', 'Manager email address': 'PaulSmth@gmail.com', 'Category': 'Owner'}, 'Full Name': 'Smth Smth'}

Excel spreadsheet I'm using:

Screen grab of the Excel sheet

I do not understand why it doesn't load the whole thing into the dictionary, and just the info from the last row.

Answer 1

You are saving each row in the same keys of the dictionary data['dict1']. Make data a list, and append a series of new dictionaries to it instead:

data = []
for i, row in enumerate(sheet.iter_rows(values_only=True)):
    rowdict = dict()
    rowdict['Work email address'] = row[1]
    rowdict['Start date'] = row[2]
    # (etc.)
    data.append(rowdict)

Done.

Answer 2

If I understood your problem correctly, it is rooted in the fact that you are overwriting the value of each key in every iteration of the loop (ie corresponding to each spreadsheet row). Try this for each column before the FOR loop:

data['dict1']['Work email address'] = []

and then append each newly read row of the sheet to the lists stored in your dictionary. So you'll have something like below in your loop:

data['dict1']['Work email address'].append(row[1])