Merging a list with a list of lists

Question

I have a list of lists:

[['John', 'Sergeant '], ['Jack', 'Commander '], ['Jill', 'Captain ']]

How can I merge it with a single list like:

['800','854','453']

So that the end result looks like:

[['John', 'Sergeant', '800'], ['Jack', 'Commander', '854'], ['Jill', 'Captain', '453']]

Initially I tried: zip(list_with_lists,list) but data was obfuscated

Answer 1

a = [['John', 'Sergeant '], ['Jack', 'Commander '], ['Jill', 'Captain ']]
b = ['800', '854', '453']
c = [x+[y] for x,y in zip(a,b)]
print c

Result:

[['John', 'Sergeant ', '800'], ['Jack', 'Commander ', '854'], ['Jill', 'Captain ', '453']]

Answer 2

Solution with enumerate instead of zip :

a = [['John', 'Sergeant '], ['Jack', 'Commander '], ['Jill', 'Captain ']]
b = ['800','854','453']
c = [a[i]+[bi] for i,bi in enumerate(b)]

Using zip is definitely the more pythonic solution in this particular case. However, sometimes you want have access to indices (yes, even in Python), so it's useful to know about enumerate too.

Answer 3

range instead of zip

a = [['John', 'Sergeant '], ['Jack', 'Commander '], ['Jill', 'Captain ']]
b = ['800','854','453']
c = [a[x]+[b[x]] for x in range(len(b))]
print c

or update original list:

[a[x].append(b[x]) for x in range(3)]