（Tkinter/Python）如何检查文本文件中的内容，并根据结果产生不同的结果？

我目前在检查我的文本文件中是否写下了内容时遇到了一些问题

在我的代码中，我检查storefile.txt文件中是否有“1”。如果文本文件中没有“1”，表示用户第一次打开了代码，Tkinter会询问用户的姓名并输入“1”（表示用户以前打开过代码）。如果没有，Tkinter会说“欢迎回来”，以及用户输入的姓名

然而，即使在我第一次打开代码之后，代码的行为就像“1”不在storefile中一样，尽管它在storefile中。代码要求输入我的名字并再次打印“1”，因此我的storefile中有超过1个“1”，并且永远不会到达“欢迎回来”[name]阶段

import tkinter as tk
from time import time
from tkinter import *
root = Tk()


#FUNCTION FOR LABELS (not necessary but it condenses the code)
def label(a):
    Label(root,text=a,font=("System",15,"bold"),fg="steelblue").pack()



#THIS IS FOR EXTRACTING SPECIFIC DATA FROM THE TEXTFILE

lines = [] #Declare an empty list named "lines"
def specify(x):
    with open ('storefile.txt', 'rt+') as in_file:  #Open file lorem.txt for reading of text data.
        for line in in_file:                       #For each line of text store in a string variable named "line", and
            lines.append(line)                     #add that line to our list of lines.
    label(lines[x])                                #print the list object.

    #[x] allows us to print whatever line we want.

#############################

#THIS IS FOR THE 'ENTER NAME' BUTTON TO STORE NAMES
def store():
    user_entry = distance_text_box.get()
    f=open("storefile.txt", "a")
    f.write (str(user_entry))
    f.close()

#TITLE
label("[INSERT TITLE]")




#CHECKS IF THIS IS THEIR FIRST TIME ON THE APP. IF IT IS, PRINT DESCRIPTION AND ASKS FOR USERNAME
searchfile = open("storefile.txt", "r")
with open ('storefile.txt', 'rt+') as in_file:  #Open file lorem.txt for reading of text data.
    for line in searchfile:                       #For each line of text store in a string variable named "line", and
        if "1" not in line:#IT STORES '1' IN THE TEXTFILE WHEN THE USER FIRST OPENS THE CODE, SO IF '1' ISN'T THERE, THE USER HAS NOT OPENED THE CODE YET
            print("yes")

            Label(root,text="ENTER NAME",font=("System",15,"bold"),fg="steelblue").pack(side=LEFT)#enter name label

            distance_text_box = Entry(root, bd=1)
            distance_text_box.pack()

            searchfile = open("storefile.txt", "a")
            searchfile.write("1\n")
            searchfile.close()

            Button(root, text ="Done!", command=lambda:store()).pack(side=RIGHT)


    elif "1" in line:
        print("no")
        Label(root,text="Welcome back,").pack()
searchfile.close()






#PUT NAME IN TEXTFILE



root.mainloop()

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首先，您试图打开一个已经打开的文件。 其次，如果要逐行访问文件，请尝试以下操作：

with open('file.txt','r') as f:
  lines  = f.readlines() #lines is now a list of lines in the file.

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如果要向文件中添加新文本，只需创建一个要添加和追加的行列表，检查循环完成后，将其追加到行列表并回写到文件。

您正在尝试向已打开的文件中写入内容。