Python - How to convert only numbers in a mixed list into float?

Question

I\'m trying to learn Python and i have a problem, so if i have something like that:

data_l = [\'data\', \'18.8\', \'17.9\', \'0.0\']

How d

Answer 1

Universal approach:

def validate_number(s):
    try:
        return float(s)
    except (ValueError, TypeError):
        return s

data = [validate_number(s) for s in data]

In case the structure is fixed:

data = [s if i == 0 else float(s) for i, s in enumerate(data)]

Another one:

data = [data[0]] + [float(s) for s in data[1:]]

isdigit would work in case of positive integers:

data = [int(s) if s.isdigit() else s for s in data]