如何添加/附加到python对象？

Question

I have a python object that was created and defined by swagger editor. I have written a program to populate it. However, instead of appending it, it keeps replacing previous entries. Below is my code;

from xlrd import open_workbook
from abc_model import BES as bes
for sheet in wb.sheet():
    if sheet.name == "ABC"
    number_columns = sheet.ncols
    for i in range(2,number_of_columns):
        xyz = bes(name = sheet.cell(19,i).value))
        model.abc_model = xyz
print(model)

This only prints and asssign the content of column 4 (assuming there are total 4 columns). However, it should have contents of columns 3 and 4. Any idea what I am doing wrong?

Answer 1

Instead of model.abc_model = xyz try model.abc_model += xyz

You're setting your column to the last value obtained, rather than adding them together with your iteration. This is why you're only getting the second value, and not the first or both.

Answer 2

As @Dylan Smite mentioned, use model.abc_model += xyz . This line of code basically mean that model.abc_model = model.abc_model + xyz . It means you add xyz to model.abc_model and then assign it back to model.abc_model