python - Method to sort a list of lists? -

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i have list of lists (can't tuples since have generate dynamically) , structured list of lists of 1 int , 1 float so:

[[1,1.0345],[2,5.098],[3,4.89],[2,5.97]]

i want sorted have managed built in sorting function sort first element of lists or not anything, need sort them second element of list , don't want implement own sorting function. example of want is:

[[1,1.0345],[3,4.89],[2,5.098],[2,5.97]]

could tell me how 1 of built in sorting functions this?

pass key argument.

l.sort(key=operator.itemgetter(1))

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