os.path.exists在同一文件上给出不同的结果

Question

以下是参考代码：

    import shutil
    import datetime
    import os.path
    from tkinter import Tk
    from tkinter.filedialog import askopenfilename
    from tkinter.filedialog import askdirectory


    if not os.path.exists('copy_path.txt'):
        root = Tk()
        root.withdraw()

        file_to_backup = askopenfilename(title=' ')
        backup_directory = askdirectory(title=' ')
        print(file_to_backup)
        print(os.path.exists(file_to_backup))

    if os.path.exists(file_to_backup):
        if os.path.exists(backup_directory):
            copy_path_file = open('copy_path.txt', 'w+')
            copy_path_file.write(file_to_backup + '\n' + backup_directory)
            copy_path_file.close()

    if os.path.exists('copy_path.txt'): 
        copy_path_file = open('copy_path.txt', 'r')
        paths = copy_path_file.readlines()
        #paths[0] = paths[0].replace('/','\\')
        print(paths[0])
        print(os.path.exists(paths[0]))
        print(os.path.isfile(paths[0]))
        print('----------------------')
        print(paths[1])
        print(os.path.exists(paths[1]))
        print(os.path.isdir(paths[1]))
        #copy_path_file.close()
        if os.path.exists(paths[0]):
            if os.path.exists(paths[1]):
                today = datetime.datetime.today()
                date = str(today.year) + "." + str(today.month) + "." + str(today.day) + "-" + str(today.hour) + "." + str(today.minute)
            index = paths[0].rfind('.')
            #new_path = paths[0][0:index-1] + date + paths[0][index:paths[0].len]
            #print(new_path)
            print(paths[0])

            #newPath = shutil.copy(paths[0], new_path)

我的问题是为什么

打印（os.path.exists（file_to_backup））

给我 true 但

打印（os.path.exists（路径[0]））

在同一路径上调用时返回 false ？

---

由于使用最小限度可重现的示例编写的代码并未询问我的问题，因此以下是较短的版本：

import os.path
from tkinter import Tk
from tkinter.filedialog import askopenfilename
from tkinter.filedialog import askdirectory

file_to_backup = askopenfilename(title=' ')
print(os.path.exists(file_to_backup))
copy_path_file = open('copy_path.txt', 'w+')
copy_path_file.write(file_to_backup + '\n' + 'backup_directory')
copy_path_file.close()

copy_path_file = open('copy_path.txt', 'r')
paths = copy_path_file.readlines()
print(os.path.exists(paths[0]))

此打印返回true

但这将返回false，将file_to_backup路径写入文件，并且在从文件中读取路径之后，它将返回false。

用户jasonharper提供的答案是正确的，我必须从文件中读取路径后删除换行符号。