Interaction and debugging, Python Programming

 

We encourage you to adopt an interactive style of debugging and programming. Use the Python shell a lot. Write short pieces of code and check them.  It is much  simpler to test the individual parts as you go, rather than  to take hours writing a large program, and then search it does not work,  and must sift through all your program, trying  to search the bugs.

But, if you ?nd  yourself in the (inevitable) position of having a big program with  a error in it, do not despair. Debugging a program does not require brilliance or creativity or much  in the way of inside.  What it needs is a systematic and persistence approach.

First of all, have  a test case (a set of inputs to the procedure you are trying  to debug) and  know what  the answer is considered to be.  To check a program, you might  start  with  some  special  cases: what  if the argument is 0 or the empty function? Those cases may  be simpler to sort through ?rst (and are also cases that can be easy to get worse). Then try more specific cases.

 

Now,  if your  program gets your  test case incorrect, what  could you do?  Resist the temptation to start  changing your  program around, just to watch if that  will ?x the solution. Do not modify  any code until  you know  what  is wrong with  what  you are doing  now, and therefore seems that the modify  you make is going to correct the problem.

Ultimately, for debugging large programs, it is most useful  to use a software development environment  with  a serious debugger. But these  methods may sometimes have  a steep  explaining curve,  so in this class we will study to debug systematically using  "print" statements.

 

Posted Date: 8/9/2012 6:59:58 AM | Location : United States







Related Discussions:- Interaction and debugging, Assignment Help, Ask Question on Interaction and debugging, Get Answer, Expert's Help, Interaction and debugging Discussions

Write discussion on Interaction and debugging
Your posts are moderated
Related Questions
Range Very frequently, we will want to iterate through a list of integer values, often as indices.  Python gives a useful function, range, which gives lists of integers. It ma

Write an algorithm for a program that shows the use of all 6 math functions. Write, test, and debug the program using Python. SAMPLE OUTPUT (not including author/program infor

Structured data We will often  want  to work  with  large  groups of data.   Rather  than  providing  each  number its own  value,  we need  to manage the data  into natural s

De?nition   A method de?nition has the abstract form: def ( , ..., ): ...   There are essentially three parts: is a name for

What if you had a list of integer values, and you need to add  them  up and give the sum?  Here are a number of different types of doing  it. First,  here  is a type in a style

how to use re.sub to seperate distint words and phrases when translating text from English to Spanish or vis versa in python programming

I have python game project which is due by next Tuesday. Do you think that I can get it on time if I order today?

Interacting with the environment Computer systems have  to communicate with  the world around them,  getting information about  the external world, and  taking  actions  to cha

Procedures in python Procedures are computer program creates that let us capture common patterns of computation by: Grouping together sequences of statements

Write an algorithm for the sum of the given series 1,-1/2,1/4,-1/8.....