CODEWITHSUNDEEP
pythonlistpython-2.7file-io
gkhnavarro
gkhnavarro

Reputation: 466

Reading text files with different numbers of integers into multiple lists

I have a file that looks like this

 25,6,73,5,3
 3,4,5
 0,6,3,78
 53,68,9,3

how can it be read as integers and put into a list of lists( per row), without a fixed list size and number of lists?(meaning i can put as many numbers into one row and as many rows as i want)

Upvotes: 1

Views: 54

Answers (2)

falsetru
falsetru

Reputation: 369064

Open the file, read line by line by iterating the open file object; split the line using str.split, convert splited strings to int:

>>> with open('/path/to/textfile.txt') as f:
...     numbers = [map(int, line.strip().split(',')) for line in f]
...
>>> numbers
[[25, 6, 73, 5, 3], [3, 4, 5], [0, 6, 3, 78], [53, 68, 9, 3]]

Upvotes: 1

nestedloop
nestedloop

Reputation: 2646

Something like this should do the trick (not tested):

with open(fileName) as f:
    content = f.readlines()
listOfLists = []
for line in content:
    listOfLists.append(line.split(','))

Upvotes: 1

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