I´m new in reading text files using python. I need to read a file which have in each line 4 data that I need, here is my text file
1 -10 0 0
2 -10 -10 0
3 0 -10 0
4 10 -10 0
5 10 0 0
6 0 0 0
my problem is, that if I use read().splitlines(), it only creates a vector with each line, but I need a vector only for the first column, one for the second, one for the third, and also one for the fourth column. Con anyone help me please?
Try this. It open the file for reading as the file pointer fp. It looks at each line, one at a time, removes the newline characters, splits the line into a list on the space character, then converts each element in the list to an integer. In then forms a list of all of the lists of integers and stores it as the variable data.
with open('filename.txt', 'r') as fp:
data = [list(map(int, line.strip().split(' '))) for line in fp]
First we make the list of strings that splitlines gives us into a list of lists. Then we can use zip to make tuples of those elements that share indices in those lists.
list(zip(*map(str.split, f.read().splitlines())))
for your input:
[('1', '2', '3', '4', '5', '6'), ('-10', '-10', '0', '10', '10', '0'),
('0', '-10', '-10', '-10', '0', '0'), ('0', '0', '0', '0', '0', '0')]
