# Python program to find the factorial of a number provided by the user # using recursion def factorial(x): """This is a recursive function to find the factorial of an integer""" if x == 1 or x == 0: return 1 else: # recursive call to the function return (x * factorial(x-1...
return factorial(n - 1, n * acc) 1. 2. 3. 4. 我们在脑内展开一下: factorial(4, 1) factorial(3, 4) factorial(2, 12) factorial(1, 24) factorial(0, 24) 24 1. 2. 3. 4. 5. 6. 很直观的就可以看出,这次的 factorial 函数在递归调用的时候不会产生一系列逐渐增多的中间变量了,而是...
@tail_call_optimized deffactorial(n,acc=1):"calculate a factorial"ifn==0:returnaccreturnfactorial(n-1,n*acc)printfactorial(10000) 为了更清晰的展示开启尾递归优化前、后调用栈的变化和tail_call_optimized装饰器抛异常退出递归调用栈的作用, 我这里利用pudb调试工具做了动图 开启尾递归优化前的调用栈 开...
@tail_call_optimized def factorial(n, acc=1): "calculate a factorial" if n == 0: return acc return factorial(n-1, n*acc) print factorial(10000) # prints a big, big number, # but doesn't hit the recursion limit. @tail_call_optimized def fib(i, current = 0, next = 1): if ...
print factorial(10000) 这里解释一下sys._getframe()函数: sys._getframe([depth]): Return a frame object from the call stack. If optional integer depth is given, return the frame object that many calls below the top of the stack.
Writing a Simple Factorial Program Python 2Khan Academy
# python program to print all negative numbers in a range# Getting list from usermyList=[]lLimit=int(input("Enter Lower limit of the range : "))uLimit=int(input("Enter Upper limit of the range : "))# printing all positive values in a rangeprint("All negative numbers of the range ...
Python program to print Palindrome numbers from the given list # Give size of listn=int(input("Enter total number of elements: "))# Give list of numbers having size nl=list(map(int,input().strip().split(" ")))# Print the input listprint("Input list elements are:", l)# Check thr...
print(factorial(5)) Output: Explanation: Here, the factorial() function calculates the product of all numbers from 1 to n using a loop Function to Reverse a String This function takes a string as input and returns its reverse using slicing ([::-1]). Example: Python 1 2 3 4 5 ...
') # 上面的代码直接复制到你的py文件里 def factorial(n): '''计算阶乘的函数''' result = n for i in range(1,n): result = result*i logging.debug(' i is ' + str(i) + ', totle is ' + str(result)) print(result) return result a = factorial(5) logging.debug('End of program...