How can I change tuples in a list to just a list?

Question

How can I change [(2,3),(4,5)] to [2,3,4,5]?

Answer 1

a = [(2, 3), (4, 5)]
b = list(a[0]) + list(a[1])

or in a more generic way:

b = [ ]
for i in range(len(a)):
b += list(a[i])

Answer 2

https://code.sololearn.com/czpA6etfj8vD/?ref=app

Answer 3

https://code.sololearn.com/c2GN3in0c8sm/?ref=app

Answer 4

Thank you