[英]Order items in a listbox in tkinter by an entity value
I have a leaderboard containing information on some scouts. 我有一个排行榜,其中包含一些侦察员的信息。 The structure of this information is as follows:
ID,forname,surname,points
. 此信息的结构如下:
ID,forname,surname,points
。 This information is stored in a file, but isn't in order within the file. 此信息存储在文件中,但在文件中的顺序不正确。 I don't want to change this.
我不想改变这个。
I'd like it so that upon updating the listbox (when i call the calcPoints()
function), it orders the scouts by the points entity within their record, from largest points to smallest points. 我想要这样,以便在更新列表框时(当我调用
calcPoints()
函数时),按其记录内的点实体(从最大点到最小点)对侦察兵进行calcPoints()
。 Below is the code for my calcPoints()
method. 以下是我的
calcPoints()
方法的代码。
Thanks 谢谢
def _calcPoints():
mainWin._leaderboard.delete(0,END)
with open(tempFileName,'a') as ft:
for sc in self._Scouts:
sc._addPoints(-int(sc._getPoints()))
with open(badgeFile,"r") as fb:
lines = fb.readlines()
for line in lines:
if sc._getID() == line.split(":")[0]:
badge = ((line.split(':')[1]).split(',')[0])
if badge == "Core":
sc._addPoints(5)
elif badge == 'Activity':
sc._addPoints(1)
elif badge == 'Challenge':
sc._addPoints(3)
elif badge == 'Activity Pack':
sc._addPoints(5)
ft.write(sc.getInfo() + "\n")
os.remove(leadFile)
with open(leadFile,"a") as f:
with open(tempFileName,"r") as ft:
lines = ft.readlines()
for line in lines:
f.write(line)
os.remove(tempFileName)
mainWin.addScoutsLeaderboard()
return
Just call sorted, sorting by the last element in each line which is the points
, using reverse=True
will sort from high to low: 只需调用sorted,并按每行中的最后一个元素即
points
进行排序,则使用reverse=True
将从高到低排序:
lines = sorted(fb,key=lambda x: float(x.rsplit(":",1)[1]),reverse=True)
Not sure which file the data is in so your file object and delimiter should match your actual file, also if you have a header you will need to add header = next(fb)
. 不确定数据位于哪个文件中,因此您的文件对象和定界符应与实际文件匹配,如果您有标头,则需要添加
header = next(fb)
。
If you are using the values individually you might find the csv module a better fit: 如果单独使用这些值,则可能会找到更适合的csv模块:
import csv
with open(badgeFile,"r") as fb:
r = csv.reader(fb,delimiter=":")
lines = sorted(r, key=lambda x: float(x[1]), reverse=True)
for fid,fname,sname,pnts in lines:
On a side note, you only need to call .readlines()
when you actually need a list, if not you can just iterate over the file object. 附带一提,您仅在实际需要列表时才需要调用
.readlines()
,否则就可以仅遍历文件对象。
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