Remove parentheses of tuples inside a list in python

Question

Given a list containing several tuples like this: L = [(1, 2, 3), (3, 2, 1), (2, 1, 6), (7, 3, 2), (1, 0, 2)]

I want simply to remove the parentheses of tuples and join the numbers to create a list.

The output should be like this:

L = [1, 2, 3, 3, 2, 1, 2, 1, 6, 7, 3, 2, 1, 0, 2]

I tried the below code, it removed parentheses but add a single quotation ''.

for x in L:
    mm = (', '.join(str(j) for j in x))
    L2.append(mm)
print(L2)

Like this: L = ['1, 2, 3', '3, 2, 1',' 2, 1, 6', '7, 3, 2', '1, 0, 2']

Look at how to flatten a list. If you want to keep the same types (int) and not convert them to str, just use : [item for tup in L for item in tup] . — matleg, Jul 18 '23 at 07:49

score 1 · Answer 1 · answered Jul 18 '23 at 07:49

There are actually no parentheses or quotation marks in the data, just in the representation of the data. Your first list contains 5 tuples, your final list contains 5 strings, but your desired list contains 15 integers. Here is a simple way to accomplish what you want:

L = [num for tup in L for num in tup]

Which is basically the same as:

new_L = []
for tup in L:
    for num in tup:
        new_L.append(num)

Remove parentheses of tuples inside a list in python

1 Answers1