Loop through list of tuples from a text file

Question

I want to be able to loop through a list of tuples from my text file and display each tuple.

code:

with open('output.txt', 'r') as f:
    data = f.read()

print(data)

output:

[(21, 21), (21, 90), (90, 90), (90, 21)]

what I want:

(21,21)
(21,90)
(90,90)
(90,21)

your file does not contain a list of tuples, *it is text*. – juanpa.arrivillaga Jul 03 '19 at 19:29 — juanpa.arrivillaga, Jul 03 '19 at 19:29

score 1 · Accepted Answer · answered Jul 03 '19 at 18:59

1

Use ast module to convert your string to a list object.

Ex:

with open('output.txt', 'r') as f:
    data = ast.literal_eval(f.read())

for i in data:
    print(i)

answered Jul 03 '19 at 18:59

Rakesh

score 0 · Answer 2 · answered Jul 03 '19 at 18:59

You are almost there, just loop over data to get the tuples

for tup in data:
    print(tup)

Chances are that your tuple won't actually of the type 'tuple' but be a string instead,

you can use this function in that case,

def str_to_tup(s):
    tempS = s.split(',')
    return (tempS[0].replace('(',''), tempS[1].replace(')','')

I know this can be done more elegantly, but incase no one else answers :)

2 Answers2