CODEWITHSUNDEEP
pythonlisttuplesreadfile
ZahraRezaei
ZahraRezaei

Reputation: 261

Read file as a list of tuples of tuples

I want to read a text file using Python. My list must be like this:

    mylist = [((5., 10.), (6.4, 13)),
              ((7., 11.), (5.6, 5.)),
              ((4., 5.67), (3.1, 2.)),
              ((13., 99.), (3.2, 1.1))]

My text file is:

    text file: 5., 10., 6.4, 13.
               7., 11., 5.6, 5.
               4., 5.67, 3.1, 2.
               13., 99., 3.2, 1.1

python code is:

    with open('test.txt') as f:
      mylist = [tuple((tuple(map(float, i.split(','))))) for i in f]
    print(mylist)

My result:

    [(5.0, 10.0, 6.4, 13.0), (7.0, 11.0, 5.6, 5.0), (4.0, 5.67, 3.1, 2.0), (13.0, 99.0, 3.2, 1.1)]

Thank you so much

Upvotes: 1

Views: 140

Answers (2)

Jem Tucker
Jem Tucker

Reputation: 1163

You need to split the lines into two separate tuples. Changing mylist to this will work:

mylist = [tuple([tuple(s[:2]), tuple(s[2:])]) 
    for s in [list(map(float, i.split(",")))
    for i in f]]

Upvotes: 1

Mike67
Mike67

Reputation: 11342

You can go one step further:

lst = [(5.0, 10.0, 6.4, 13.0), (7.0, 11.0, 5.6, 5.0), (4.0, 5.67, 3.1, 2.0), (13.0, 99.0, 3.2, 1.1)]
lst2 = [(tt[:2],tt[2:]) for tt in lst]

print(lst2)

Output

[((5.0, 10.0), (6.4, 13.0)), ((7.0, 11.0), (5.6, 5.0)), ((4.0, 5.67), (3.1, 2.0)), ((13.0, 99.0), (3.2, 1.1))]

Upvotes: 1

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