merging sublist into single list in python

[snippsat]

Ohh not easy to read that line scidam
It can be simplified down.

>>> lst = ['Group Name Details', 'Group Name', 'Person Phone Number', 'Father Name']

>>> [word for line in lst for word in line.split()]
['Group', 'Name', 'Details', 'Group', 'Name', 'Person', 'Phone', 'Number', 'Father', 'Name']

>>> sum(map(str.split, sum([[k] if isinstance(k, str) else k for k in lst], [])), [])
['Group', 'Name', 'Details', 'Group', 'Name', 'Person', 'Phone', 'Number', 'Father', 'Name']