如何修复：FileNotFoundError:[Errno 2]没有这样的文件或目录

Question

我在尝试打开一个绝对保存到我的计算机上的文件（“NYT-bestsellers.txt”）时遇到问题，但是每当我尝试用我的代码打开它时，就会出现错误

FileNotFoundError: [Errno 2] No such file or directory: 'NYT-bestsellers.txt'

我考虑过使用使用完整路径打开文件的方法…但这是我本周晚些时候提交的作业的一部分。如果我使用笔记本电脑的特定路径打开文件，我担心它不会为标记打开。请告知！

with open('NYT-bestsellers.txt', 'r') as file:
    file = file.splitlines()

Answer 1

正如Ryan所说，每次以相对名称打开文件时，都需要明确当前的工作路径。

import sys
import os


current_work_directory = os.getcwd()    # Return a string representing the current working directory.
print('Current work directory: {}'.format(current_work_directory))
# Make sure it's an absolute path.
abs_work_directory = os.path.abspath(current_work_directory)
print('Current work directory (full path): {}'.format(abs_work_directory))
print()

filename = 'NYT-bestsellers.txt'
# Check whether file exists.
if not os.path.isfile(filename):
    # Stop with leaving a note to the user.
    print('It seems file "{}" not exists in directory: "{}"'.format(filename, current_work_directory))
    sys.exit(1)

# File exists, go on!
with open(filename, 'r') as file:
    file = file.splitlines()

如果确认该文件将与python脚本文件一起使用，则可以在打开该文件之前进行一些准备工作：

script_directory = os.path.split(os.path.abspath(__file__))[0]
print(script_directory)

abs_filename = os.path.join(script_directory, filename)
print(abs_filename)

with open(abs_filename, 'r') as file:
    file = file.splitlines()