I want to split the sublists into its elements

Question

import sys
su_pri=0
su_sc=0
n = int(raw_input().strip())
m=0

j=n-1
count=1
diff=0
a = []
for a_i in range(n):
    a_temp = map(int,raw_input().strip().split(' '))
    a.append(a_temp)
print a
while(m<=len(a)):
    su_pri=sum(su_pri,int(a[m]))
    m=m+n+1
while(count<=n):
    su_sc=su_sc+a[j]
    j=j+n-1
diff=abs(su_pri-su_sc)
print diff

if n=3 then the list is

3 11 2 4 4 5 6 10 8 -12 The list is [[11, 2, 4], [4, 5, 6], [10, 8, -12]] i want to store all elements into a single list with length=9(in this case) How can i do that??? Please tell me

https://stackoverflow.com/questions/2158395/flatten-an-irregular-list-of-lists-in-python — Chris Curvey, Apr 15 '17 at 15:40
Python has the "batteries included" philosophy, except if you want to flatten a list. :-/ — Eric Duminil, Apr 15 '17 at 15:55

score 1 · Answer 1 · answered Apr 15 '17 at 15:42

1

Create a new list and add them together

newdiff = []
for eachlist in diff:
    newdiff += eachlist
print newdiff

answered Apr 15 '17 at 15:42

Davidhall

35
11

score 0 · Answer 2 · answered Apr 15 '17 at 15:53

0

For instance:

a = [[11, 2, 4], [4, 5, 6], [10, 8, -12]]
b = a[0] + a[1] + a[2]

answered Apr 15 '17 at 15:53

stovfl

14,998
7
24
51

score 0 · Answer 3 · edited May 23 '17 at 12:02

0

You want to add each element in the array to each other. Something like this maybe? Hope that helps :)

edited May 23 '17 at 12:02

Community

1
1

answered Apr 15 '17 at 15:58

Raults

306
2
14

score 0 · Accepted Answer · edited May 23 '17 at 12:17

0

I think you're looking to try to flatten a list of lists in python, which I found this post really helpful.

l =  [[11, 2, 4], [4, 5, 6], [10, 8, -12]] #the list of lists to be flattened

flattenedList = [item for sublist in l for item in sublist]

edited May 23 '17 at 12:17

Community

1
1

answered Apr 15 '17 at 16:09

user3554661

32
7

Thanks.It really helped – Parth Srivastava Apr 16 '17 at 16:17

I want to split the sublists into its elements

4 Answers4