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Read at specific values ​​from a file and store them in a python list

I have a file in the following format:

-2000 -2000 -2000 # (*THE FRAME, origin point*), 1
-2000 379 -2000 # 2
 2000 379 -2000 # 3
 2000 -2000 -2000 # 4
-2000 -2000 -2000 # 1
j
 2000 379 -1190 # 7
 2000 -2000 -1190 # 8
-2000 -2000 -1190 # 5

I need to read this file in python and save it in a list in the following format:

[[[-2000, -2000, -2000], [-2000 379 -2000], [2000, 379, -2000], [2000, -2000, -2000], [-2000, -2000, -2000]],[[2000, 379, -1190], [2000, -2000, -1190], [-2000, -2000, -1190]]]

while I read the file and saved the values ​​in a list

file = open('filename', 'r')
vlist = file.readlines()
file.close

then I go to each of the "j" values ​​in [-1, -1, -1] and use this value as a gap between the lists.

points = []
points = [list(map(int,elem.split())) if elem.strip().lower() != "j" else [-1, -1, -1]     for elem in vlist]

and then using itertools, I can break this list down into groups that are divided into [-1, -1, -1] each time:

pointLists = [list(group) for val, group in groupby(points, lambda x: x == [-1,-1,-1]) if not val]

this, I believe, will give me my desired result, however, it does not work for the example file that I showed up, because it does not delete the # and the values ​​that follow it.

I'm not sure how to remove # and the values ​​that follow from the list, so any help would be great help. Thanks.

enter code here
+4
4

:

with open(filename) as f:
    lines = [l.split() for l in f.readlines()]
lines = [map(float, l[:3]) for l in lines if len(l)>=3]

s >= 3 float.

0

[-1,-1,-1] :

with open('stuff') as f:
    list1 = [line.strip().split('#')[0].split() for line in f]
    print [[map(int, var) for var in g] for k, g in groupby(list1, key=lambda x: len(x)==1) if k != 1]

.

+3

This code gets what you need.

file = open('test', 'r')
lines = file.readlines()
file.close

a = []
b = []
t = a
for line in lines:
    temp = line.split('#')
    if len(temp) == 1:
        t = b
        continue
    t.append(map(int, temp[0].strip().split(' ')))

list = [a,b]
print list
0
source

Using regex ...

import re
f = open("file.txt")
data = f.readlines()
f.close()
output = []
final = []
for line in data:
    l = re.findall("[0-9\-]+|[j]", re.sub("[#](.+)", "", line))
    if l == ['j']:
        final.append(output)
        output = []
        continue
    output.append([float(i) for i in l])
if output:
    final.append(output)
for i in final: print i
0
source

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