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+--- Thread: Appending to a List in Python 3 (/thread-14452.html)
Appending to a List in Python 3 - kas_samrari - Nov-30-2018
Hello,
I am trying to get the following List output [[2,3,4,5],[3,4,5,6],[4,5,6,7],[5,6,7,8] with a nested For loop. I am able to get the outer list but not the individual lists within the list. Here's my code and the output. Can you please suggest what I need to change to get the desired output and thank you in advance for your help.
Kind regards,
my_list = [2,3,4,5]
lst = []
for i in my_list:
for j in range(0,4):
lst.append(i+j)
print(lst)[2, 3, 4, 5, 3, 4, 5, 6, 4, 5, 6, 7, 5, 6, 7, 8]
RE: Appending to a List in Python 3 - ichabod801 - Nov-30-2018
Just like you make lst, you need to make a sub_lst within the
for i loop. That's what you append to in the for j loop, and after that loop you append sub_lst to lst.
RE: Appending to a List in Python 3 - kas_samrari - Nov-30-2018
Not sure if I understand. Tried the following but it did not work. Sorry still new to python.
my_list = [2,3,4,5]
lst = []
sub_lst = []
for i in my_list:
sub_lst.append(i)
for j in range(0,4):
lst.append(sub_lst)
print(lst)
RE: Appending to a List in Python 3 - ichabod801 - Nov-30-2018
No, like this:
for i in my_list:
sub_lst = []
for j in range(0, 4):
sub_lst.append(i + j)
lst.append(sub_lst)
RE: Appending to a List in Python 3 - kas_samrari - Nov-30-2018
Thank you. That works perfectly.