convert element in a list to float

[Laura Creighton]

In a message of Sun, 13 Sep 2015 12:55:13 -0700, forums_mp at hotmail.com writes:
>
>
>For starters, I googled and saw a plethora of writings on how to convert an entire list from string to float.   My interest is on select elements in the list.  The output from the print statement: print scenarioList 
>  
>is as follows
>
>[ '3000000', '"N"', '11400000', '"E"' ]
>
>I need to convert the first and third element to float.  
>  lat = ( float ) scenarioList [ 0 ]
>  lon = ( float ) scenarioList [ 2 ]
>
>fails (invalid syntax).  How can I achieve my objective. 
>
>Thanks in advance

Does this help?

>>> l = [ '3000000', '"N"', '11400000', '"E"' ]
>>> [float(l[0]), l[1], float(l[2]), l[3]]
[3000000.0, '"N"', 11400000.0, '"E"']

Laura