在Python中,數學模塊包含許多數學運算,可以使用該模塊輕鬆執行。math.factorial()
函數返回所需數字的階乘。
用法: math.factorial(x) 參數: x: This is a numeric expression. 返回: factorial of desired number.
代碼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))
輸出:
The factorial of 5 is:120
代碼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))
輸出:
The factorial of 5 is: 120 The factorial of 15 is: 1307674368000 The factorial of 8 is: 40320
代碼3:如果x不是整數,則引發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))
輸出:
ValueError:factorial() only accepts integral values
相關用法
- Python now()用法及代碼示例
- Python cmp()用法及代碼示例
- Python map()用法及代碼示例
- Python ord()用法及代碼示例
- Python int()用法及代碼示例
- Python dir()用法及代碼示例
- Python hex()用法及代碼示例
- Python sum()用法及代碼示例
- Python tell()用法及代碼示例
- Python id()用法及代碼示例
- Python oct()用法及代碼示例
注:本文由純淨天空篩選整理自Shivam_k大神的英文原創作品 Python | math.factorial() function。非經特殊聲明,原始代碼版權歸原作者所有,本譯文未經允許或授權,請勿轉載或複製。