这是phython编码程序，我不知道这个有什么问题。请告诉我，如果你发现任何错误或新技巧找到一个立方根... [英] This is phython coding program, I do not know what wrong in this..please tell me if you find any error or new trick to find a cube root...

问题描述

 cube = int（输入（输入一个vlue找到它的立方根，（vlue必须是> 1）：'））
 epsilon = 0.01 
 num_guess = 0 
 low = 0 
 high = cube 
 guess =（high + low）/2.0 
而abs（guess ** 3-cube）> = epsilon：
如果猜测** 3< cube：
 low = guess 
 else：＃guess ** 3> = guess 
 high = guess 
 guess =（high + low）/2.0 
 num_guess + 1 
 if（high == low）：
 guess = low #or it = high 
 break 
 
 print（'猜数' ='，num_guess）
打印（猜）

我尝试过：



当我运行它没有回复它也不能给出一个恐怖......



运行后的例子这个程序：



输入一个vlue找到它的立方根，（vlue必须是&1;）：9









#its什么都不提供

解决方案

With Python，缩进是你的程序的结构，要特别小心。

U.调试器并逐行执行，你会看到有什么问题。



有一个工具可以让你看到你的代码在做什么，它的名字是调试的。它也是一个很好的学习工具，因为它向你展示了现实，你可以看到哪种期望与现实相符。

当你不明白你的代码在做什么或为什么它做它做的时候，答案就是答案是调试器。

使用调试器查看代码正在执行的操作。只需设置断点并查看代码执行情况，调试器允许您逐行执行第1行并在执行时检查变量。



调试器 - 维基百科，免费的百科全书 [ ^ ]



掌握Visual Studio 2010中的调试 - 初学者指南 [ ^ ]

使用Visual Studio 2010进行基本调试 - YouTube [ ^ ]

27.3。 pdb - Python调试器 - Python 3.6.1文档 [ ^ ]

使用Python进行调试Python征服宇宙 [ ^ ]

pdb - 交互式调试器 - 本周的Python模块 [ ^ ]

调试器在这里显示你的内容代码正在做，你的任务是与它应该做的事情进行比较。

调试器中没有魔法，它没有发现错误，它只是帮助你。当代码没有达到预期效果时，你就接近了一个bug。

 num_guess +  1  ＃ 这是错误的，它什么都不做 
 
 num_guess + =  1  ＃ 这是正确的，将1加到num_guess  

cube=int(input(' enter a vlue to find it cube root,(vlue must be >1):'))
epsilon=0.01
num_guess=0
low=0
high=cube
guess=(high+low)/2.0
while abs(guess**3-cube)>=epsilon:
	if guess**3<cube:
			low=guess
	else:	#guess**3>=guess
		high=guess
		guess=(high+low)/2.0
		num_guess+1
		if(high==low):
			guess=low      #or it =high 
			break

print('number of guess=',num_guess)
print(guess)

What I have tried:

when i run it it give no respond it also cant give a arror...

example after run this program:

enter a vlue to find it cube root,(vlue must be >1):9




#its give nothing

解决方案

With Python, indentation is the structure of your program, pay extra care to it.
Use the debugger and execute line by line, you will see what is wrong.

There is a tool that allow you to see what your code is doing, its name is debugger. It is also a great learning tool because it show you reality and you can see which expectation match reality.
When you don't understand what your code is doing or why it does what it does, the answer is debugger.
Use the debugger to see what your code is doing. Just set a breakpoint and see your code performing, the debugger allow you to execute lines 1 by 1 and to inspect variables as it execute.

Debugger - Wikipedia, the free encyclopedia[^]

Mastering Debugging in Visual Studio 2010 - A Beginner's Guide[^]
Basic Debugging with Visual Studio 2010 - YouTube[^]
27.3. pdb — The Python Debugger — Python 3.6.1 documentation[^]
Debugging in Python | Python Conquers The Universe[^]
pdb – Interactive Debugger - Python Module of the Week[^]
The debugger is here to show you what your code is doing and your task is to compare with what it should do.
There is no magic in the debugger, it don't find bugs, it just help you to. When the code don't do what is expected, you are close to a bug.

num_guess+1 # this is wrong, it does nothing

num_guess += 1  # this is correct, add 1 to num_guess

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