Python-сообщество

import tkinter as tk
import tkinter.font as tkFont
import tkinter.ttk as ttk


class treeListBox:
    def __init__(self, master):
        self.master = master
        self.tree = None

    def go(self, element_header, element_list, selectmode = 'extended'):
        self.selectValue = None
        self.selectmode = selectmode
        self.element_header = element_header
        self.element_list = element_list
        
        self._setup_widgets()
        self._build_tree()

        self.master.mainloop()
        
        return self.selectValue

    def _setup_widgets(self):
        rootheight = self.master.winfo_reqheight()
        rootwidth = self.master.winfo_reqwidth()
        container = tk.Frame(self.master, height=rootheight, width=rootwidth)
        container.propagate(False)
        container.pack()
       
        self.tree = ttk.Treeview(container,columns=self.element_header, show="headings", selectmode = self.selectmode )
        self.tree.bind("<Double-Button-1>", self.myselect,'+')
        self.tree.bind("<Return>", self.myselect,'+')
        
        self.fry = tk.Frame(container)
        self.fry.pack(side='right', fill='y')

        mylabel = tk.Label(self.fry, borderwidth=1, relief='raised', font= "Arial 8").pack(side='bottom',fill='x')

        self.vsb = tk.Scrollbar(self.fry,orient="vertical", command=self.tree.yview)
        self.vsb.pack(expand='yes', fill='y')

        self.frx = tk.Frame(container)
        self.frx.pack(side='bottom', fill='x')        
        self.hsb = tk.Scrollbar(self.frx,orient="horizontal", command=self.tree.xview)
        self.hsb.pack(expand='yes', fill='x')

        self.tree.configure(yscrollcommand=self.vsb.set, xscrollcommand=self.hsb.set)

        self.tree.pack(fill='both',expand='yes')
        
       
        
    def _build_tree(self):
        #без этого дополнения не влазят полностью надписи в выделенный размер столбцов
        dopolnenie=10
        for col in self.element_header:
            self.tree.heading(col, text=col.title(),
                command=lambda c=col: self.sortby(self.tree, c, 0))
            self.tree.column(col, width=tkFont.Font().measure(col.title())+dopolnenie)
        
        for item in self.element_list:
            myrow=self.tree.insert('', 'end', values=item)
            for ix, val in enumerate(item):
                col_w = tkFont.Font().measure(val)+dopolnenie
                if (self.tree.column(self.element_header[ix], width=None)+dopolnenie) < col_w:
                    self.tree.column(self.element_header[ix], width=col_w)
                    

    def isnumeric(self, s):
        """test if a string is numeric"""
        for c in s:
            if c in "1234567890-.":
                numeric = True
            else:
                return False
        return numeric
        
    def change_numeric(self, data):
        """if the data to be sorted is numeric change to float"""
        new_data = []
        if self.isnumeric(data[0][0]):
            for child, col in data:
                new_data.append((float(child), col))
            return new_data
        return data
    
    def sortby(self, tree, col, descending):
        """sort tree contents when a column header is clicked on"""
        # grab values to sort
        data = [(tree.set(child, col), child) for child in tree.get_children('')]
        # if the data to be sorted is numeric change to float
        data = self.change_numeric(data)
        # now sort the data in place
        data.sort(reverse=descending)
        for ix, item in enumerate(data):
            tree.move(item[1], '', ix)
        # switch the heading so that it will sort in the opposite direction
        tree.heading(col,
            command=lambda col=col: self.sortby(tree, col, int(not descending)))

    def myselect(self, event):
        try:
            print(self.tree.item(self.tree.selection()[0],'values')[1])
        except IndexError:
            #print ('Выбор не сделан')
            pass
        #self.tree.set(self.tree.selection()[0],column='ipaddress',value='111')

    
            
  
# тестовая команда
if __name__ == '__main__':
    element_header = ['symbol', 'name', 'atomic weight', 'melt (K)', 'boil (K)']

    element_list = [
    ('H', 'Hydrogen', '1.00794', '13.81', '20.28') ,
    ('He', 'Helium', '4.00260', '0.95', '4.216') ,
    ('Li', 'Lithium', '6.941', '453.7', '1615') ,
    ('Be', 'Beryllium', '9.01218', '1560', '3243') ,
    ('B', 'Boron', '10.811', '2365', '4275') ,
    ('C', 'Carbon', '12.011', '3825', '5100') ,
    ('N', 'Nitrogen', '14.0067', '63.15', '77.344') ,
    ('O', 'Oxygen', '15.9994', '54.8', '90.188') ,
    ('F', 'Fluorine', '18.99840', '53.65', '85.0')
    ]
    
    root = tk.Tk()
    frame = tk.Frame(root)
    frame.config(height=300, width=400)
    frame.pack()
    myTest = treeListBox(frame)
    myTest.go(element_header, element_list)