import re
 
rx = re.compile(r'''
			(?P<category>[A-Z][A-Z- ]+[A-Z])
			[. ]+
			(?P<value>-?\d[.\d]+)\ 
			(?P<unit>M|DEG|KN)
			''', re.VERBOSE)
 
string = '''
WATER DEPTH ..........     20.00 M      TENSION AT TOUCHDOWN .    382.47 KN  
 
TOUCHDOWN X-COORD. ...   -206.75 M      BOTTOM SLOPE ANGLE ...     0.000 DEG 
 
PROJECTED SPAN LENGTH     166.74 M      PIPE LENGTH GAIN .....      1.72 M  
'''
 
matches = [(m.group('category'), m.group('value'), m.group('unit')) \
			for m in rx.finditer(string)]
print(matches)
 

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