Preventing overwriting when using numpy.savetxt

Question

Is there built error handling for prevent overwriting a file when using numpy.savetxt? If 'my_file' already exists, and I run numpy.savetxt("my_file", my_array) I want an error to be generated telling me the file already exists, or asking if the user is sure they want to write to the file.

Accepted Answer

You can check if the file already exists before you write your data:

```
import os

if not os.path.exists('my_file'): numpy.savetxt('my_file', my_array)
```

Preventing overwriting when using numpy.savetxt

Solution

Problem