在Python中,数学模块包含许多数学运算,可以使用该模块轻松执行。math.factorial()
函数返回所需数字的阶乘。
用法: math.factorial(x) 参数: x: This is a numeric expression. 返回: factorial of desired number.
代码1:
# Python code to demonstrate the working of factorial()
# importing "math" for mathematical operations
import math
x = 5
# returning the factorial
print ("The factorial of 5 is:", end ="")
print (math.factorial(x))
输出:
The factorial of 5 is:120
代码2:
# Python code to demonstrate the working of factorial()
# importing "math" for mathematical operations
import math
x = 5
y = 15
z = 8
# returning the factorial
print ("The factorial of 5 is:", math.factorial(x))
print ("The factorial of 15 is:", math.factorial(y))
print ("The factorial of 8 is:", math.factorial(z))
输出:
The factorial of 5 is: 120 The factorial of 15 is: 1307674368000 The factorial of 8 is: 40320
代码3:如果x不是整数,则引发ValueError
# Python code to demonstrate the working of factorial()
# importing "math" for mathematical operations
import math
# when x is not integer
print ("math.factorial(13.7):", math.factorial(13.7))
输出:
ValueError:factorial() only accepts integral values
相关用法
- Python now()用法及代码示例
- Python cmp()用法及代码示例
- Python map()用法及代码示例
- Python ord()用法及代码示例
- Python int()用法及代码示例
- Python dir()用法及代码示例
- Python hex()用法及代码示例
- Python sum()用法及代码示例
- Python tell()用法及代码示例
- Python id()用法及代码示例
- Python oct()用法及代码示例
注:本文由纯净天空筛选整理自Shivam_k大神的英文原创作品 Python | math.factorial() function。非经特殊声明,原始代码版权归原作者所有,本译文未经允许或授权,请勿转载或复制。