逐行读取然后拆分每行的每个对象-python3

Question

I am starting using python and lately, I have been struggling with python. I have the following txt document:

A001 A001.bam A001.bai
A002 A002.bam A002.bai
A003 A003.bam A003.bai
A005 A005.bam A005.bai
A006 A006.bam A006.bai

I would like to read each line and create a list of list. Such as:

[[A001 A001.bam A001.bai][A002 A002.bam A002.bai][A003 A003.bam
 A003.bai][A005 A005.bam A005.bai][A006 A006.bam A006.bai]]

Then, I would like to separe each object of each line. Kind of following this example:

a,b,c = x.split(“,”)

a 'blue'

b 'red'

c 'green'

So it would end up looking kind of:

a 'A001'
b 'A001.bam'
c 'A001.bai'

This is as far as I have arrived:

file = open("path_to_file/file.txt")
map = file.read().splitlines()
samp = []
for line in map:
    samples = line.split(" ")
    samp.append(samples)
    samp[line].split(" ")
print(samp)

But it does not work and I am getting very confused. Could someone help this beginner?

Thanks in advance

Answer 1

You could use zip with your keys to create a list of objects from your file:

with open('test.txt') as f:
  arr = [dict(zip(['a', 'b', 'c'], line.split())) for line in f]

print(arr)

Output:

[{'a': 'A001', 'b': 'A001.bam', 'c': 'A001.bai'}, {'a': 'A002', 'b': 'A002.bam', 'c': 'A002.bai'}, {'a': 'A003', 'b': 'A003.bam', 'c': 'A003.bai'}, {'a': 'A005', 'b': 'A005.bam', 'c': 'A005.bai'}, {'a': 'A006', 'b': 'A006.bam', 'c': 'A006.bai'}]

Answer 2

I believe that you were wanting to maintain it as a list of lists to do that you just need to remove one line from your code.

file = open("path_to_file/file.txt")
map = file.read().splitlines()
samp = []
for line in map:
    samples = line.split(" ")
    samp.append(samples)
print(samp)
file.close()

But you can simplify it a bit by doing this as you can directly loop through the lines of a file:

with open("filename") as file: 
    samp = []
    for line in file:
        samp.append(line.split(" "))
    print(samp)