*. When processing the automatic export file once, since the directory variable about the folder in the for loop is called infinitely repeatedly, so:
A super-long folder directory was created under the file system of window, haha, it cannot be deleted manually, after 2 and ten minutes (manually modify the folder name, I thought it could be solved, huh, zz), I started Baidu to find a solution, hey , It turns out that using the tool is so simple, that is, use the compression tool to make the super long folder into a compressed package, and select the option to delete the source file, ha (＾－＾)V
*. When you are processing file download and other operations, if the file cannot be found (but the file is indeed there)
Look carefully to see if your code for handling file paths ignores tabs such as spaces, and unexpected things like spaces are added to the path.