Append items in front to every list inside list of lists, not to the back-CodePudding

I have the following list of lists.

list_list = 
[
 [1640, 0.1731, 0.173757, 0.1711825, 0.1726265, 4723572.914018], 
 [1640, 0.1726265, 0.1735915, 0.1715855, 0.1734615, 2590512.353352], 
 [1640, 0.1734615, 0.1750445, 0.1731025, 0.1739595, 1803995.1104755], 
]

I would like to append item_name to the front of the list such that it looks like this;

    item_name = "item"
    new_list_list = 
    [
     ["item", "item", 1640, 0.1731, 0.173757, 0.1711825, 0.1726265, 4723572.914018], 
     ["item", "item", 1640, 0.1726265, 0.1735915, 0.1715855, 0.1734615, 2590512.353352], 
     ["item", "item", 1640, 0.1734615, 0.1750445, 0.1731025, 0.1739595, 1803995.1104755], 
    ]

Here is the python code I wrote to do this;

item_name = "item"
new_list_list = [item   [item_name]   [item_name] for item in list_of_list]

The code appends the items to the back of the list. What I want is append to the front of the list.

I am using python 3.9.

CodePudding user response：

try:

new_list_list = [[item_name]   [item_name]   item for item in list_of_list]

CodePudding user response：

This might do the trick:

new_list_list = [[item_name]   [item_name]   item for item in list_of_list]