Python read from file that has multiple values

Question

Ben
5 0 0 0 0 0 0 1 0 1 -3 5 0 0 0 5 5 0 0 0 0 5 0 0 0 0 0 0 0 0 1 3 0 1 0 -5 0 0 5 5 0 5 5 5 0 5 5 0 0 0 5 5 5 5 -5 
Moose
5 5 0 0 0 0 3 0 0 1 0 5 3 0 5 0 3 3 5 0 0 0 0 0 5 0 0 0 0 0 3 5 0 0 0 0 0 5 -3 0 0 0 5 0 0 0 0 0 0 5 5 0 3 0 0 
Reuven

I was wondering how to read multiple lines of this sort of file into a list or dictionary as I want the ratings which are the numbers to stay with the names of the person that corresponds with the rating

Please be more focused and provide your attempts at your problem. Are you having trouble with reading the file? with storing the data? help us help you — Tomerikoo, Mar 23 '20 at 18:22
https://stackoverflow.com/questions/3277503/how-to-read-a-file-line-by-line-into-a-list — Tomerikoo, Mar 23 '20 at 18:26
would there be ratings for Reuven be expected in the 6th line of the file? — Arco Bast, Mar 23 '20 at 18:35

Arco Bast · Answer 1 · 2020-03-23T18:36:20.993

You could read the file in pairs of two lines and populate a dictionary.

path = ... # path to your file
out = {}
with open(path) as f:
    # iterate over lines in the file
    for line in f:
        # the first, 3rd, ... line contains the name
        name = line
        # the 2nd, 4th, ... line contains the ratings
        ratings = f.next() # by calling next here, we jump two lines per iteration
        # write values to dictionary while using strip to get rid of whitespace
        out[name.strip()] = [int(rating.strip()) for rating in ratings.strip().split(' ')]

It could also be done with a while loop:

path = ... # path to your file
out = {}
with open(path) as f:
    while(True):
        # read name and ratings, which are in consecutive lines
        name = f.readline()
        ratings = f.readline()
        # stop condition: end of file is reached
        if name == '':
            break
        # write values to dictionary:
        # use name as key and convert ratings to integers. 
        # use strip to get rid of whitespace
        out[name.strip()] = [int(rating.strip()) for rating in ratings.strip().split(' ')]

score 0 · Answer 2 · answered Mar 23 '20 at 18:51

0

You can use zip to combine lines by pairs to form the dictionary

with open("file.txt","r") as f:
    lines = f.read().split("\n")
    d = { n:[*map(int,r.split())] for n,r in zip(lines[::2],lines[1::2]) }

answered Mar 23 '20 at 18:51

Alain T.

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Python read from file that has multiple values

2 Answers2