Why would the isdigit() string method return false on negative numbers?

Question

Python

Why would the isdigit() string method return false on negative numbers ?
eg:
/////////////////////////////////
string='-1'
print (string.isdigit())
result will be False
///////////////////////////////
How to get around this ?

thanks in advance !

Answer 1

def is_digit(n):
    try:
        int(n)
        return True
    except ValueError:
        return  False

https://stackoverflow.com/a/28279781