从另一个python文件导入对象作为列表

Question

I have a file (Crop_Library.py) containing a list of objects with various attributes (same number for all):

from Crop import Crop

Basil = Crop("Basil", 3, 0, 5, 10, 5)
Lettuce = Crop("Lettuce", 3, 4, 5, 10, 7)
Kale = Crop("Kale", 1, 2, 3, 4, 5)

I would like for my GUI program (GUI.py) to read all the objects in Crop_Library.py and store them in a list so that my GUI can list them in a Combobox (so they also need to be converted to strings, or just read the crop.name string, which is the first attribute for all).

For now, importing is the question. However as an FYI, I would like to add edit functionality to another part of my GUI in the future such that the objects can be created/edited/deleted. I am open to using a json file instead of a python file to store these objects if that is a better approach - I am new to python and just very lost so any guidance is appreciated.

Thanks in advance!

Answer 1

There are a few solutions:

1. Create a new .txt file, store the lists and read from them

2. Create a code that reads from that file

Answer 2

If you use JSON, what you read won't be Crop objects. You could turn the input into Crop objects after reading the data.

Here's how you could have a list upon import of what you have:

from Crop import Crop

Basil = Crop("Basil", 3, 0, 5, 10, 5)
Lettuce = Crop("Lettuce", 3, 4, 5, 10, 7)
Kale = Crop("Kale", 1, 2, 3, 4, 5)

crops = [ Basil, Lettuce, Kale ]

or more concisely, if you don't need the object names, which you shouldn't...

from Crop import Crop

crops = [
    Crop("Basil", 3, 0, 5, 10, 5),
    Crop("Lettuce", 3, 4, 5, 10, 7),
    Crop("Kale", 1, 2, 3, 4, 5,)
]

BTW, per proper Python naming conventions, your Crop object names should be lowercase.