Das deutsche Python-Forum

Leonidas hat geschrieben:[...]
Anyway, testing for type in the isPrime example is not considered good style.

def isPrime(n):
    """Returns True if n is prime and False otherwise"""
    if not isinstance(n, int) or n < 2:
        return False
    elif n == 2:
        return True
    max = int(math.ceil(math.sqrt(n)))
    i = 2
    while i <= max:
        if n % i == 0:
            return False
        i += 1
    return True

def isPrime(n):
    if not isinstance(n, int):
        raise TypeError("n is not from data type int or long")

    if n < 2:
        return False
# etc.

Leonidas hat geschrieben:Hi parallelpython, welcome in the forum!

Is it your project?

Leonidas hat geschrieben: There are examples but I don't see any documentation how it works under the hood.

sape hat geschrieben: Much better:

Code: Alles auswählen

def isPrime(n):
    if not isinstance(n, int):
        raise TypeError("n is not from data type int or long")

BTW: The name of the function is not conform with the PEP8 Style Guide. ``is_prime`` ist better as ``isPrime``