在Python中使用OpenCV在不存在的文件夹中创建文件 [英] Creating a file in a non-existing folder using OpenCV in Python

问题描述

我正在尝试使用python中的opencv创建图像文件. 当我在同一文件夹中创建它时

i am trying to create an image file using opencv in python. when i am creating it in same folder file is created

          face_file_name = "te.jpg"
          cv2.imwrite(face_file_name, image)

但是当我尝试在另一个文件夹中创建它时

but when i am trying to create it in another folder like

          face_file_name = "test\te.jpg"
          cv2.imwrite(face_file_name, image)

文件未创建.有人可以解释原因吗?

file is not created. can someone explain the reasons??

我什至尝试给出绝对路径. 我在Windows中使用python2.7.

i even tried giving absolute path. i am using python2.7 in windows.

推荐答案

cv2.imwrite()如果该目录不存在，则不会在另一个目录中写入映像.在尝试写入目录之前，您首先需要创建目录:

cv2.imwrite() will not write an image in another directory if the directory does not exist. You first need to create the directory before attempting to write to it:

import os
dirname = 'test'
os.mkdir(dirname)

从这里，您可以在不更改工作目录的情况下写入目录:

From here, you can either write to the directory without changing your working directory:

cv2.imwrite(os.path.join(dirname, face_file_name), image)

或根据您的需要更改工作目录并省略目录前缀:

Or change your working directory and omit the directory prefix, depending on your needs:

os.chdir(dirname)
cv2.imwrite(face_file_name, image)

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