How Can I Verify If A String Is A Valid Float?

What I want to do is to verify if a string is numeric -- a float -- but I haven't found a string property to do this. Maybe there isn't one. I have a problem with this code: N = r

Solution 1:

try:
    N = float(N)
except ValueError:
    pass
except TypeError:
    pass

This tries to convert N to a float. However, if it isn't possible (because it isn't a number), it will pass (do nothing).

I suggest you read about try and except blocks.

You could also do:

try:
    N = float(N)
except (ValueError, TypeError):
    pass