# import sympy 
from sympy import * 
  
x = symbols('x')
k = 5
print("Value of x = {} and k = {}".format(x, k))
   
# Use sympy.rf() method 
rf_x_k = rf(x, k)  
      
print("Rising factorial rf(x, k) : {}".format(rf_x_k))  

Value of x = x and k = 5
Rising factorial rf(x, k) : x*(x + 1)*(x + 2)*(x + 3)*(x + 4)

# import sympy 
from sympy import * 
  
x = 7
k = 5
print("Value of x = {} and k = {}".format(x, k))
   
# Use sympy.rf() method 
rf_x_k = rf(x, k)  
      
print("Rising factorial rf(x, k) : {}".format(rf_x_k))  

Value of x = 7 and k = 5
Rising factorial rf(x, k) : 55440