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Python traverses folders and counts all file sizes. I believe many inexperienced people don't know what to do about this. Therefore, this article summarizes the causes and solutions of the problem. Through this article, I hope you can solve this problem.

Recursive solution

The idea of recursive problem solving is not surprising, and the code is very simple and easy to understand. Traverses a directory, accumulating the size of all files, and calling its own recursive statistical subdirectory for subdirectories.

There are two points to pay attention to:

First, path writing is strongly recommended to use "/", which is commonly used in windows and linux systems.

Second, the file and path splicing method, tested by time, the f string splicing method is slightly more efficient than the os.path.join () method, and the writing is also more concise.

Import osdef getdir1 (path): name_list = os.listdir (path) size = 0for I in name_list:j = f'{path} / {I}'# string for file and path stitching + more direct and efficient # j = os.path.join (path,i) if os.path.isdir (j): size + = getdir1 (j) else:size + = os.path.getsize (j) return sizeprint (getdir1 ('DJV / learning materials')) out:304372584432 cyclic solution

The idea of circular problem solving should pay attention to the following two points:

First, the pop and append use of the list, so that the list is actually used as a stack, last-in, first-out.

Second, pay attention to the writing of while name_dir, this is to determine whether the name_dir list is empty, if it is empty, it ends the loop, and if it is not empty, the loop.

Def getdir2 (path): size = 0name_dir = [path] while name_dir:name_list = os.listdir (ret: = name_dir.pop ()) for i in name_list:j = f'{ret} / {I}'if os.path.isfile (j): size + = os.path.getsize (j) else:name_dir.append (j) return sizeprint (getdir2 ('DJV / Learning material') out:304372584432 read the above Have you mastered the method of traversing folders and counting all file sizes in python? If you want to learn more skills or want to know more about it, you are welcome to follow the industry information channel, thank you for reading!

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