When importing data files into LEFTII, I encounter a file. When importing, sometimes the original file generated may not exist. Now I add a judgment to judge whether the file exists. At first, I thought it was simple to judge the file file.exists( ) exists, but later it turns out that this can only determine whether the local file exists.
Here we tell you a clever method, which is to share remote files locally. This problem can be easily solved through computer diffraction.
The process is as follows
Then enter the username and password in the following steps, so that you can determine whether the file exists locally.