python- i can't use splitlines() method

Question

I was trying to calculate average and standart deviation of the exam results using python. Each line has the form
[10 digit school number][space][1 or 2 digit mid term 1 result][space][1 or 2 digit mid term 2 result]

But i could not use the splitlines method it is not working in the following way:
a=str(1234567890 10 20
1234567809 12 30)
b=a.splitlines()
print(b)

Answer 1

Because your integer value has whitespaces.

Answer 2

splitlines splits based on '\n'
your string has none.
you also can us str() with whitespace