python tkinter 中的部分搜索不起作用

Question

我的部分代码有问题。这是关于在树视图中进行部分搜索。我在这里找到了堆栈溢出部分搜索方法，并尝试与我的代码一起使用。它不起作用 - 它没有给出任何结果。下面的代码：from tkinter import *from tkinter import ttkroot = Tk()sv = StringVar()ids = []names = []def add():    names = tree.insert("",END,values=(e0.get(),e1.get(),e2.get(),e3.get()))for i in range(len(names)):    ids.append(tree.insert("", "end", text=names[i])) def command(*args):    selections = []    for i in range(len(names)):        if entry.get() != "" and entry.get() == names[i][:len(entry.get())]:            selections.append(ids[i])        tree.selection_set(selections)sv.trace("w", command)entry = Entry(root, textvariable=sv,width=13)entry.grid(row=2,column=1,rowspan=3,sticky=W)e0 = Entry(root,width=15)e0.grid(row=0,column=1,rowspan=1,sticky=W)e1 = Entry(root,width=15)e1.grid(row=0,column=1,rowspan=2,sticky=W)e2 = Entry(root,width=15)e2.grid(row=0,column=1,rowspan=3,sticky=W)e3 = Entry(root,width=15)e3.grid(row=0,column=1,rowspan=4,sticky=W) btn1 = Button(root,text="add",width=5,command=add)btn1.grid(row =0,column=0,rowspan=5)lb1 = Label(root,text="serial num:")lb1.grid(row =0,column=0,rowspan=1)lb2 = Label(root,text="medicine\nname ")lb2.grid(row =0,column=0,rowspan=2)lb3 = Label(root,text="quatity")lb3.grid(row =0,column=0,rowspan=3)lb4 = Label(root,text="expiry Date")lb4.grid(row =0,column=0,rowspan=4)lb4 = Label(root,text="search box")lb4.grid(row =1,column=0,rowspan=6)#treeviewtree = ttk.Treeview(root,height=25)tree["columns"]=("one","two","three","four")tree.column("one",width=120)tree.column("two",width=160)tree.column("three",width=130)tree.column("four",width=160)tree.heading("one", text="Numer seryjny leku")tree.heading("two", text="Nazwa Leku")tree.heading("three", text="Ampułki/Tabletki")tree.heading("four",text="Data ważności")tree["show"]="headings"tree.grid(row=0,column=2,rowspan=6,pady=20)root.geometry("840x580")root.mainloop()

Answer 1

变量names未定义。您应该在代码的开头放置与以下行类似的行：

names = []

另一方面，您必须如下声明命令函数才能使其工作，因为跟踪回调需要至少三个参数：

def command(*args):

顺便说一句，如果您不想丢失 variable 中的数据names，我会以面向类的方式转换您的代码，例如以下代码：

from tkinter import *

from tkinter import ttk

root = Tk()

sv = StringVar()

ids = []

class Tree():

    def __init__(self, root):

        self.names = []

        sv.trace("w", self.command)

        self.entry = Entry(root, textvariable=sv, width=13)

        self.entry.grid(row=2,column=1,rowspan=3,sticky=W)

        self.e0 = Entry(root,width=15)

        self.e0.grid(row=0,column=1,rowspan=1,sticky=W)

        self.e1 = Entry(root,width=15)

        self.e1.grid(row=0,column=1,rowspan=2,sticky=W)

        self.e2 = Entry(root,width=15)

        self.e2.grid(row=0,column=1,rowspan=3,sticky=W)

        self.e3 = Entry(root,width=15)

        self.e3.grid(row=0,column=1,rowspan=4,sticky=W)

        

        self.btn1 = Button(root,text="add",width=5,command=self.add)

        self.btn1.grid(row =0,column=0,rowspan=5)

        self.lb1 = Label(root,text="serial num:")

        self.lb1.grid(row =0,column=0,rowspan=1)

        self.lb2 = Label(root,text="medicine\nname ")

        self.lb2.grid(row =0,column=0,rowspan=2)

        self.lb3 = Label(root,text="quatity")

        self.lb3.grid(row =0,column=0,rowspan=3)

        self.lb4 = Label(root,text="expiry Date")

        self.lb4.grid(row =0,column=0,rowspan=4)

        self.lb4 = Label(root,text="search box")

        self.lb4.grid(row =1,column=0,rowspan=6)

        #treeview

        self.tree = ttk.Treeview(root,height=25)

        self.tree["columns"]=("one","two","three","four")

        self.tree.column("one",width=120)

        self.tree.column("two",width=160)

        self.tree.column("three",width=130)

        self.tree.column("four",width=160)

        self.tree.heading("one", text="Numer seryjny leku")

        self.tree.heading("two", text="Nazwa Leku")

        self.tree.heading("three", text="Ampułki/Tabletki")

        self.tree.heading("four",text="Data ważności")

        self.tree["show"]="headings"

        self.tree.grid(row=0,column=2,rowspan=6,pady=20)

    

    def add(self):

        self.names = self.tree.insert("",END,values=(self.e0.get(),self.e1.get(),self.e2.get(),self.e3.get()))

        for i in range(len(self.names)):

            ids.append(self.tree.insert("", "end", text=self.names[i]))

    

    def command(self, *args):

        selections = []

        for i in range(len(self.names)):

            if self.entry.get() != "" and self.entry.get() == self.names[i][:len(self.entry.get())]:

                selections.append(ids[i])

            self.tree.selection_set(selections)

tree = Tree(root)

root.geometry("840x580")

root.mainloop()