import re
s = 'xyx 234 aa44XY.aaAyyy984a ABCaxYxx3yYa x aa.'
pattern = r'\S+' # sequence of non-whitespace
for match in re.findall(pattern, s):
print('Found: {!r}'.format(match))
'''
run:
Found: 'xyx'
Found: '234'
Found: 'aa44XY.aaAyyy984a'
Found: 'ABCaxYxx3yYa'
Found: 'x'
Found: 'aa.'
'''