Question

我正在尝试使用self.search来确定我的.txt文件中的哪些行将被显示，即：条目为“蓝色”，它将在文本中打印所有带蓝色的行。
每个按钮都会搜索不同的.txt文件。

Tkinter回调中的异常回溯（最近一次调用最后一次）：文件“C：\ Users \ gblmac \ AppData \ Local \ Programs \ Python \ Python36-32 \ lib \ tkinter__init __。py”，第1702行，调用在searchvision中返回self.func（* args）文件“D：\ Users \ gblmac \ Desktop \ Python程序\ Testing \ GUI类和 init .py”，第37行self.usertext in line：TypeError：'in'要求字符串作为左操作数，而不是StringVar

from tkinter import *

class App:
    def __init__(self):
        self.master = Tk()
        self.master.title("PM and Vision Finder")
        self.master.configure(bg="orange")
        self.master.geometry("500x500")
        self.mybutton1 = Button(self.master, text="Vision Names", command=self.searchvision)

        self.mybutton1.grid(row=0, column=0)

        self.mybutton2 = Button(self.master, text="PM",
                           command=self.searchpm)

        self.mybutton2.grid(row=1, column=0)

        self.usertext = StringVar()
        self.initialtext = StringVar()
        self.initialtext.set ("Type Here")

        self.myentry = Entry(self.master, textvariable=self.initialtext)
        self.myentry.grid(row=2, column=0)

    def searchvision(self):

        self.search = open(r"D:\Users\gblmac\Desktop\Python programs\Vision Names\Vision Names.txt")
        for line in self.search:
            if self.usertext in line:
                print (line)

    def searchpm(self):

        self.search = open(r"D:\Users\gblmac\Desktop\Python programs\PMs\PMs.txt")
        for line in self.search:
            if self.usertext in line:
                print (line)

        print (self.usertext.get())


    self.master.mainloop()

App()

Answer 1

in需要字符串作为左操作数

对于此

if self.usertext in line:

不是StringVar

因为左侧变量是StringVar

self.usertext = StringVar()

您需要使用

if self.usertext.get() in line:

in <string>'需要字符串作为左操作数，而不是StringVar

1 个答案: