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pythonlistcasting

How do I convert all of the items in a list to floats?


I have a script which reads a text file, pulls decimal numbers out of it as strings and places them into a list.

So I have this list:

my_list = ['0.49', '0.54', '0.54', '0.55', '0.55', '0.54', '0.55', '0.55', '0.54']

How do I convert each of the values in the list from a string to a float?

I have tried:

for item in my_list:
    float(item)

But this doesn't seem to work for me.


Solution

  • [float(i) for i in lst]
    

    to be precise, it creates a new list with float values. Unlike the map approach it will work in py3k.