how to make a list?

Question

i had one practice which gave me a list of numbers and asked for a list for even numbers
i wrote this:

a = [1, 4, 9, 16, 25, 36, 38, 49, 54, 63, 64, 81, 100]
for i in a:
if i%2==0:
print(i)
I forgot how to make a list as an output
can anyone help?

Answer 1

Sasan Jafari ,

take your code and modify it:

- before going in the loop, create an empty list e.g. <res>

- inside the loop, remove or comment out the print statement

- instead of print, use the new list <res> and the list method <.append(<argument>)>, where argument is the current item in loop => i

- after loop is finished, print out the new list <res>

Answer 2

@lothar @JaScript @A͢J
thank you guys, I solved the problem

a = [1, 4, 9, 16, 25, 36, 38, 49, 54, 63, 64, 81, 100]
new_list = []
for i in a:
if i%2==0:
new_list.append(i)
print(new_list)

Answer 3

Sasan Jafari

Using list comprehension

a = [1, 4, 9, 16, 25, 36, 38, 49, 54, 63, 64, 81, 100]

new_list = [i for i in a if i % 2 == 0]

print (new_list)

Answer 4

Append value in list

Or use lambda expression to filter data as a list

or use list comprehensions

Answer 5

alist = list(("apple", "banana", "cherry"))
print(alist)

Answer 6

A͢J thank you so much
It is much easier

Answer 7

Create an empty list in another variable, append to it each even number

Answer 8

I have no idea