'Reading from file to add to list

I need to get from list(file) who is coming to party and who is not.

File looks like this:

(+) John
(?) Jake
(+) Billie

How to read that person with + is coming ?

python

Solution 1:^[1]

file = open("your_file", "r")
c = []
for line in file:
    if line[1] == '+':
        c.append(line[4:].strip())
print(c)

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Solution	Source
Solution 1	???