Python: 检查用户输入给定的文件夹目录

Question

我正在创建一些 python 代码，其初始阶段让用户输入源文件夹、目标文件夹和文本文件的目录。这些目录应在用户输入后立即检查。这是一个示例：

Enter directory path of a source folder:
>>>C:\bla\source_folder
Thanks, this folder exists.

Enter directory path of a destination folder:
>>>C:\dest_folder

(let's say this folder does not exist)

This folder does not exist! Please enter correct path.
>>>C:\bla\dest_folder

Enter directory path of a text file:
>>>C:\bla\bla.txt
Thanks, this file exists.

我的代码不完整，可能错误，因为我真的不知道该怎么做。

def source_folder()
    source_folder = raw_input("Enter path of source folder: ")
    try:
        if open(source_folder)
            print("Folder path is correct!")
    except:
        #if there are any errors, print 'fail' for these errors
        print(source_folder, 'This folder has not been found')

def dest_folder()
    dest_folder = raw_input("Enter path of destination folder: ")

def input_file()
    input_file = raw_input("Enter path of your text file: ")

Answer 1

尝试https://docs.python.org/2/library/os.path.html#os.path.isdir

 if os.path.isdir(source_folder):
     print("Folder path is correct!")

与 https://docs.python.org/2/library/os.path.html#os.path.isfile

文件的方式相同

Answer 2

结合@massiou 的建议，我按如下方式完成了这个脚本：

import os

found = False
source_folder=None
dest_folder=None
text_file=None


while not found:
    source_folder = str(raw_input("Enter full path of source folder: "))
    print source_folder
    if not os.path.isdir(source_folder):
        print(source_folder, 'This folder has not been found. Enter correct path. ')
    else:
        print("Folder path is correct!")
        found = True

found = False
while not found:
    dest_folder = raw_input("Enter full path of destination folder: ")
    if not os.path.isdir(dest_folder):
        print(dest_folder, 'This folder has not been found. Enter correct path. ')
    else:
        print("Folder path is correct!")
        found = True

found = False
while not found:
    text_file = raw_input("Enter full path your text file folder: ")
    if not os.path.isfile(text_file):
        print(text_file, 'This file has not been found. Enter correct path. ')
    else:
        print("File path is correct!")
        found = True

Python: 检查用户输入给定的文件夹目录

Python: Check folder directory given by user input

python

user-input

python-2.7