唐，不知道如何解决这个问题？ [英] Don, t know how to solve this?

问题描述

from sys import argv
from os.path import exists

print(f"Copying from test.txt to copy-write.txt ")

# We could do these two on new line, how ?

in_file = open(test.txt)
indata = in_file.read()


print(f"The input file is {len(in_file)} long")

print(f"Does the output file exist? {exists(copy-write)}")

print('Ready , hit RETURN to continue , CTRL + C to abort')
input()

out_file = open(copy-write, 'w')
out_file.write(indata)

print("Alright It,s done baby")

out_file.close()
in_file.close()

我尝试过：



i收到名称错误。我找到的文件我已经给文件位置正确，但我得到这个名称没有定义

What I have tried:

i am getting a name error . the file i located i have gave the file location right but i am getting the this name is not defined

推荐答案

你需要在你的文件名周围加上引号声明。它们是文件的名称，而不是Python对象。



我建议你去 Python教程 - Python 3.7.1文档 [ ^ ]并通过它几次。您将比在此处发布基本问题更快地学习。

You need to put quotes around your file names in the open statements. They are names of files, not Python objects.

I suggest you go to The Python Tutorial — Python 3.7.1 documentation[^] and work your way through it a few times. You will learn much faster than posting basic questions here.

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