如何使用tkinter python获取文本文件并从中创建三重嵌套列表

Question

I'm making a program that allows the user to log loot they receive from monsters in an MMO. I have the drop tables for each monster stored in text files. I've tried a few different formats but I still can't pin down exactly how to take that information into python and store it into a list of lists of lists.

The text file is formatted like this

item 1*4,5,8*ns
item 2*3*s
item 3*90,34*ns

The item # is the name of the item, the numbers are different quantities that can be dropped, and the s/ns is whether the item is stackable or not stackable in game.

I want the entire drop table of the monster to be stored in a list called currentDropTable so that I can reference the names and quantities of the items to pull photos and log the quantities dropped and stuff.

The list for the above example should look like this

[["item 1", ["4","5","8"], "ns"], ["item 2", ["2","3"], "s"], ["item 3", ["90","34"], "ns"]]

That way, I can reference currentDropTable[0][0] to get the name of an item, or if I want to log a drop of 4 of item 1, I can use currentDropTable[0][1][0].

I hope this makes sense, I've tried the following and it almost works, but I don't know what to add or change to get the result I want.

def convert_drop_table(list):
    global currentDropTable
    currentDropTable = []
    for i in list:
        item = i.split('*')
        currentDropTable.append(item)

dropTableFile = open("droptable.txt", "r").read().split('\n')
convert_drop_table(dropTableFile)

print(currentDropTable)

This prints everything properly except the quantities are still an entity without being a list, so it would look like

[['item 1', '4,5,8', 'ns'], ['item 2', '2,3', 's']...etc]

I've tried nesting another for j in i, split(',') but then that breaks up everything, not just the list of quantities.

I hope I was clear, if I need to clarify anything let me know. This is the first time I've posted on here, usually I can just find another solution from the past but I haven't been able to find anyone who is trying to do or doing what I want to do.

Thank you.

Answer 1

You want to split only the second entity by ',' so you don't need another loop. Since you know that item = i.split('*') returns a list of 3 items, you can simply change your innermost for-loop as follows,

for i in list:
        item = i.split('*')
        item[1] = item[1].split(',')
        currentDropTable.append(item)

Here you replace the second element of item with a list of the quantities.

Answer 2

You only need to split second element from that list.

def convert_drop_table(list):
    global currentDropTable
    currentDropTable = []
    for i in list:
        item = i.split('*')
        item[1] = item[1].split(',')
        currentDropTable.append(item)

Answer 3

The first thing I feel bound to say is that it's usually a good idea to avoid using global variables in any language. Errors involving them can be hard to track down. In fact you could simply omit that function convert_drop_table from your code and do what you need in-line. Then readers aren't obliged to look elsewhere to find out what it does.

And here's yet another way to parse those lines! :) Look for the asterisks then use their positions to select what you want.

currentDropTable = []
with open('droptable.txt') as droptable:
    for line in droptable:
        line = line.strip()
        p = line.find('*')
        q = line.rfind('*')
        currentDropTable.append([line[0:p], line[1+p:q], line[1+q:]])

print (currentDropTable)