| param | description | 
|---|---|
| mode | mode to open file, default=w+b | 
| delete | To delete file on closure, default=True | 
| suffix | filename suffix, default='' | 
| prefix | filename prefix, default='tmp' | 
| dir | dirname to place tempfile, default=None | 
| buffsize | default=-1, (operating system default used) | 
 
                