python: convert numerical data in pandas dataframe to floats in the presence of strings

Question

I\'ve got a pandas dataframe with a column \'cap\'. This column mostly consists of floats but has a few strings in it, for instance at index 2.

df =
    cap
         


        

Answer 1

I tried an alternative on the above:

for num, item in enumerate(data['col']):
    try:
        float(item)
    except:
        data['col'][num] = nan