def factorial(n): if n == 0: return 1 else: return n * factorial(n-1)如何运行

这是一个计算阶乘的 Python 函数。要运行此函数，可以先在 Python 环境中定义该函数，然后调用该函数并传入一个整数参数。例如，可以在 Python 环境中输入以下代码：

def factorial(n):
    if n == 0:
        return 1
    else:
        return n * factorial(n-1)

print(factorial(5))

这将输出 120，因为 5 的阶乘为 5 * 4 * 3 * 2 * 1 = 120。你也可以传入其他整数参数来计算不同的阶乘值。

相关问题

def factorial(n): if n == 0: return 1 else: return n * factorial(n-1) n = 10 print(factorial(n))

The above code defines a function named "factorial" that takes an integer "n" as input and recursively calculates and returns the factorial of "n".

The factorial of a non-negative integer "n" is defined as the product of all positive integers less than or equal to "n". For example, the factorial of 5 is 5 x 4 x 3 x 2 x 1 = 120.

The code then sets the value of "n" to 10 and calls the "factorial" function with "n" as input. The result (3628800, the factorial of 10) is printed to the console.

def factorial(n): if n == 0: return 1 else: return n * factorial(n-1)

This is a recursive function to calculate the factorial of a given number.

The factorial of a number is the product of all integers from 1 to that number. For example, the factorial of 5 is 5 x 4 x 3 x 2 x 1 = 120.

The function takes in a parameter 'n', which is the number whose factorial is to be calculated. If the number is 0, the function returns 1 (since the factorial of 0 is 1). Otherwise, it recursively calls itself with n-1 as the parameter and multiplies the result with n. This continues until n reaches 0, at which point the function returns the final result.