Inserting a String into a List Without Getting Split into Characters

Question

I'm new to Python and can't find a way to insert a string into a list without it getting split into individual characters:

>>> list=['hello','world']
>>> list
['hello', 'world']
>>> list[:0]='foo'
>>> list
['f', 'o', 'o', 'hello', 'world']

What should I do to have:

['foo', 'hello', 'world']

Searched the docs and the Web, but it has not been my day.

Accepted Answer

To add to the end of the list:

list.append('foo')

To insert at the beginning:

list.insert(0, 'foo')

Answer 2

Sticking to the method you are using to insert it, use

list[:0] = ['foo']

Answer 3

Another option is using the overloaded + operator:

>>> l = ['hello','world']
>>> l = ['foo'] + l
>>> l
['foo', 'hello', 'world']

Answer 4

best put brackets around foo, and use +=

list+=['foo']

Answer 5

>>> li = ['aaa', 'bbb']
>>> li.insert(0, 'wow!')
>>> li
['wow!', 'aaa', 'bbb']

Answer 6

Don't use list as a variable name. It's a built in that you are masking.

To insert, use the insert function of lists.

l = ['hello','world']
l.insert(0, 'foo')
print l
['foo', 'hello', 'world']

Answer 7

You have to add another list:

list[:0]=['foo']

Answer 8

ls=['hello','world']
ls.append('python')
['hello', 'world', 'python']

or (use insert function where you can use index position in list)

ls.insert(0,'python')
print(ls)
['python', 'hello', 'world']

Answer 9

I suggest to add the '+' operator as follows:

list = list + ['foo']

Hope it helps!

9 Answers