小编Tol*_*ola的帖子

谁能告诉我如何删除 tkinter Treeview 中的标题行？

from tkinter import *
from tkinter import ttk

root = Tk()

NewTree= ttk.Treeview(root)
NewTree.pack()
NewTree.heading("#0", text="How to remove this row?")
NewTree.insert("", "0", 'item1',text='Item number 1')

root.mainloop()

我正在使用ezdxf将.dxf文件导入Python。它工作顺利。我得到了直线和弧线的列表。

如何找出哪些直线和弧相互连接？它们是否以某种方式编入索引，或者我是否需要搜索直线和圆弧的起点和终点并随后匹配它们？

我需要找到的是文件中的封闭行.dxf。

I want to make a music library app and in the admin/artist page I would like to link to a list with all the albums by the artist.

Models look like this:

class Artist(models.Model):
    artistName = models.CharField(max_length=100, blank = False) 
    genre = models.CharField(max_length=100, blank = False) 

    def __str__(self):
        return self.artistName

class Album(models.Model):
    artist = models.ForeignKey(Artist, on_delete=models.CASCADE)
    albumName = models.CharField(max_length=500, blank = False)
    year = models.IntegerField(blank = False)

    def __str__(self):
        return self.albumName

Now for the admin part, I imagine that I …