python - Read csv while grouping rows -

i have csv file exported external application such

15/07/2008 2:48:53 pm  measurement device:; dvp3445 field detector:; diode reference detector:; undefined scan mode:; continuous  points [mm]: x; y; depth; normalized field; current field; ratio 0.0; -109.0; 20.0; 1.3; 0; 0.0 0.0; -108.7; 20.0; 1.3; 0; 0.0 0.0; -108.4; 20.0; 1.3; 0; 0.0 0.0; -108.0; 20.0; 1.3; 0; 0.0 0.0; -107.7; 20.0; 1.3; 0; 0.0   15/07/2008 5:28:50 pm  measurement device:; dvp3445 field detector:; diode reference detector:; undefined scan mode:; continuous  points [mm]: x; y; depth; normalized field; current field; ratio 0.0; -108.7; 40.0; 1.3; 0; 0.0 0.0; -108.4; 40.0; 1.4; 0; 0.0 0.0; -108.1; 40.0; 1.4; 0; 0.0 0.0; -107.8; 40.0; 1.4; 0; 0.0 0.0; -107.5; 40.0; 1.5; 0; 0.0 0.0; -107.2; 40.0; 1.6; 0; 0.0 0.0; -106.9; 40.0; 1.6; 0; 0.0   15/07/2008 5:28:50 pm  measurement device:; dvp3445 field detector:; diode reference detector:; undefined scan mode:; continuous  points [mm]: x; y; depth; normalized field; current field; ratio 0.0; -106.6; 40.0; 1.7; 0; 0.0 0.0; -106.3; 40.0; 1.8; 0; 0.0 0.0; -106.0; 40.0; 1.8; 0; 0.0 0.0; -105.7; 40.0; 1.9; 0; 0.0 0.0; -105.4; 40.0; 2.0; 0; 0.0 0.0; -105.1; 40.0; 2.1; 0; 0.0 0.0; -104.8; 40.0; 2.2; 0; 0.0 0.0; -104.5; 40.0; 2.3; 0; 0.0 

does of python csv readers handle kind of situation given output looking 3 arrays each column corresponding point headers x; y; depth; normalized field; current field; ratio.

i tried implement using regex parsing didn't work. can share ideas ?

gt

since reader classes in csv module initialised string-iterables, suffice chunk out appropriate blocks of lines:

import csv  f = open('data.txt', 'r') lines = [l l in f if len(l.split(';')) == 6]  # filter relevant lines bounds = [i i, line in enumerate(lines) if line[0] == 'x'] + [len(lines)] bounds = zip(bounds, bounds[1:])  # [(0, 6), (6, 14), (14, 23)] line_blocks = [lines[start: end] start, end in bounds]  csv_readers = [csv.dictreader(block, delimiter=';', skipinitialspace=true) block in line_blocks] 

now each reader iterable on dict instances headers keys.

r = csv_readers[0] record in r:     print record  {'ratio': '0.0', 'depth': '20.0', 'normalized field': '1.3', 'current field': '0', 'y': '-109.0', 'x': '0.0'} {'ratio': '0.0', 'depth': '20.0', 'normalized field': '1.3', 'current field': '0', 'y': '-108.7', 'x': '0.0'} {'ratio': '0.0', 'depth': '20.0', 'normalized field': '1.3', 'current field': '0', 'y': '-108.4', 'x': '0.0'} {'ratio': '0.0', 'depth': '20.0', 'normalized field': '1.3', 'current field': '0', 'y': '-108.0', 'x': '0.0'} {'ratio': '0.0', 'depth': '20.0', 'normalized field': '1.3', 'current field': '0', 'y': '-107.7', 'x': '0.0'}