我需要从文件中获取x，y坐标的元组并将其添加到列表中

Question

So my txt file looks like this:

68,125
113,69
65,86
108,149
152,53
78,90
54,160
20,137
107,90
48,12

I need to read these files and then put it into a list of x and y coordinates tuples.

My output should be

[(68, 125), (113, 69), (65, 86), (108, 149), (152, 53), (78, 90), (54, 160), (20, 137), (107, 90), (48, 12)] 

I am stuck on how to do this. I need to use basic python only.

Edit:

My attempt so far is this

numbers = []
input_file = open(filename,'r')
numbers_list = input_file.readlines()
input_file.close()
for i in numbers_list:
    numbers += [i]
return numbers

My output returns as this:

['68,125\n', '113,69\n', '65,86\n', '108,149\n', '152,53\n', '78,90\n', '54,160\n', '20,137\n', '107,90\n', '48,12\n']

How do I get rid of the '\\n' and also how can I put each individual element in the list into a tuple. Thank you. My mistake for not adding in my attempt.

Answer 1

Here are 3 and 2 line answers:

with open("my_txt_file") as f:
  lines = f.readlines()
result = [tuple(int(s) for s in line.strip().split(",")) for line in lines]

better, as Ilja Everilä pointed out, "open file as iterator":

with open("my_txt_file") as f:
  result = [tuple(int(s) for s in line.strip().split(",")) for line in f]

Answer 2

Read all the content on the basis of new line from file. Strip the newlines from each string. Then convert each string into tuple by splitting on comma. Below is the code witha text file input having content as you have asked and result as you expected.

import sys
def test(filename):
    f = open(filename)
    lines = f.readlines()
    lines = [item.rstrip("\n") for item in lines]
    newList = list()
    for item in lines:
            item = item.split(",")
            item = tuple(int(items) for items in item)
            newList.append(item)                
    f.close()
    print newList

if __name__ == "__main__":
    test(sys.argv[1])

O/P:
techie@gateway2:myExperiments$ python test.py /export/home/techie/myExperiments/test.txt
[(68, 125), (113, 69), (65, 86), (108, 149), (152, 53), (78, 90), (54, 160), (20, 137), (107, 90), (48, 12)]

Hope this will help. :-)

Answer 3

As your file contains comma separated integer values, you could use the csv module to handle it:

import csv

with open(filename, newline='') as f:
    reader = csv.reader(f)
    numbers = [tuple(map(int, row)) for row in reader]