How do we ask a filename to save the results?

2. If we have an existing file and needs to modify that file, how can we write  the file with  an entry that has the timestamp,

3. When the script begins pinging and display the timestamp to the screen.

if we are pinging a given file  anytime how it looks like when the ping fails on python and how can I write to the file anytime a ping fails.  

4. if someone is asking an entry that has the time stamp every time a ping fails what will be the python code looks like?

5. How do we use a CLI to verify that you can test IP addresses/sites to obtain successful and unsuccessful pings?