Is there any way to find whether a value in string is a float or not in python?

Question

I have a problem with string, I am aware that using isdigit() we can find whether an integer in the string is an int or not but how to find when its float in the string. I have also used isinstance() though it didn't work. Any other alternative for finding a value in the string is float or not??

My code:

v = '23.90'
isinstance(v, float)

which gives:

False

Excepted output:

True

Answer 1

You could just cast it to float or int, and then catch an eventual exception like this:

try:
    int(val)
except:
    print("Value is not an integer.")
try:
    float(val)
except:
    print("Value is not a float.")

You can return False in your except part and True after the cast in the try part, if that's what you want.