Sometimes, a function can become expensive to call multiple times (say, a function to calculate the factorial of a number). But there’s a way we can optimize such functions and make them execute much faster:caching. 有时,一个函数多次调用可能会变得昂贵(例如,一个计算数字阶乘的函数)。 但是,...
Python | Calculate discount based on the sale amount using Nested if else. Python | 如果不是,则使用嵌套计算基于销售额的折扣。 Python | Design a simple calculator using if elif (just like switch case) Python | 使用if elif设计一个简单的计算器(就像开关盒一样) Python | Find the factorial of...
Write a function to calculate the factorial of a number. The factorial of a non-negative integer n is the product of all positive integers less than or equal to n. For example, for input5, the output should be 120 1 2 def factorial(n): Check Code Share on: Did you find this...
This function decorates a function with tail call optimization. It does this by throwing an exception if it is it's own grandparent, and catching such exceptions to fake the tail call optimization. This function fails if the decorated function recurses in a non-tail context. """ def func(*...
__doc__ return func @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) 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...
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): ...
def factorial(n):"""计算阶乘的递归函数 (A recursive function to calculate factorial)"""if n == 1:return 1else:return n * factorial(n-1) 在这个例子中,我们使用文档字符串(docstring)来解释函数的功能,这是Python特有的一种注释方式。这种注释不仅对阅读代码的人有帮助,也可以被Python的自动化文档工具...
This function decorates a function with tail call optimization. It does this by throwing an exception if it is it's own grandparent, and catching such exceptions to fake the tail call optimization. This function fails if the decorated
5. Factorial of a Number Write a Python function to calculate the factorial of a number (a non-negative integer). The function accepts the number as an argument. Click me to see the sample solution 6. Check if a Number Falls Within a Given Range ...
to find the factorial of an integer"""ifx ==1:return1else:return(x * factorial(x-1)) num =3print("The factorial of", num,"is", factorial(num)) Run Code Output The factorial of 3 is 6 In the above example,factorial()is a recursive function as it calls itself. ...