debugging

问题 I'm trying to use xlwings for the first time but I can't quite understand the documentation. From the section "Quickstart" I read import xlwings as xw wb = xw.Book() # this will create a new workbook When I try this "at home", I have no problem importing xlwings but with the second script I get this error: AttributeError: module 'xlwings' has no attribute 'Book' When I try to see the attributes of xw I can see AboveBelow,ActionTime etc. but not Book. Can you help please? Thank you very much.

问题 I wish to determine if the following program (an implementation of finding the maximum sub-array) leaks memory. Is there a general way to determine this? Such as using some feature of a debugger? What are general strategies? struct Interval { int max_left; int max_right; int sum; }; struct Interval * max_crossing_subarray(int A[], int low, int mid, int high) { struct Interval * crossing = malloc(sizeof(struct Interval)); int left_sum = INT_MIN; int sum = 0; for(int i = mid; i >= low; --i) {

问题 I wish to determine if the following program (an implementation of finding the maximum sub-array) leaks memory. Is there a general way to determine this? Such as using some feature of a debugger? What are general strategies? struct Interval { int max_left; int max_right; int sum; }; struct Interval * max_crossing_subarray(int A[], int low, int mid, int high) { struct Interval * crossing = malloc(sizeof(struct Interval)); int left_sum = INT_MIN; int sum = 0; for(int i = mid; i >= low; --i) {

问题 In C we write code like #ifdef DEBUG printf("Some debug log... This could probably be achieved by python logging.Logger"); /* Do some sanity check code */ assert someCondition /* More complex sanitycheck */ while(list->next){ assert fooCheck(list) } #endif Is there a way to do this in python? Edit: I got my answer, and more :) Paolo, Steven Rumbalski and J Sebastian gave me the information I was looking for. Thanks das for the detailed answer, although I'll probably not use a preprocessor

问题 I have followed instructions on how to add fiddler certificate on android emulator, using both nox and memu emulators, as well as my android phone running marshmallow, I set the WiFi proxy to point to my PC over the local network, when I open a website using a web browser, things work fine, I receive the warning, I choose to proceed and the connection is successfully tunneled and decrypted using fiddler. But, when I try to use other apps, connections fail! I see the tunnel connections, and

问题 This question already has answers here : What is a NullPointerException, and how do I fix it? (12 answers) Closed 14 days ago . I'm getting the NullPointerException described in the title, but I don't understand how to use the information in the error message to debug it. How do I know what's null, and what are common causes of that? If you're seeing an error like java.lang.NullPointerException: Attempt to invoke virtual method '...' on a null object reference , this question aims to help

问题 This question already has answers here : What is a NullPointerException, and how do I fix it? (12 answers) Closed 14 days ago . I'm getting the NullPointerException described in the title, but I don't understand how to use the information in the error message to debug it. How do I know what's null, and what are common causes of that? If you're seeing an error like java.lang.NullPointerException: Attempt to invoke virtual method '...' on a null object reference , this question aims to help

问题 I am not able to debug odoo in docker container. I am using Visual Studio Code and I have the following launch.json configuration. { "version": "0.2.0", "configurations": [ { "name": "Odoo 12", "type": "python", "request": "launch", "stopOnEntry": false, "pythonPath": "${config:python.pythonPath}", "program": "/usr/bin/odoo", "args": [ "--config=/etc/odoo/odoo.conf" ] } ] } Everytime I start a debugger, this error occurs: Exception in thread odoo.service.httpd: Traceback (most recent call

问题 I have some dynamic sql statement which bombs under certain conditions, so I am trying to debug it. it gets built like so: declare @sql varchar(4000); ... select @sql = '<part1>'; ... select @sql = @sql + '<part2>'; ... select @sql = @sql + '<part3>'; ... begin execute(@sql); select @ec__errno = @@error if @ec__errno != 0 begin if @@trancount != 0 begin rollback; end return @ec__errno; end; ... As I said, it bombs in a particular iteration of a loop (don't ask me why it is implemented like

问题 I have a Qt 5.4 project on Windows 7 using MSVC 2013 and the CDB debugger. When I attempt to debug the program, the debug log shows that the debugger crashes. I can run the program without debugging. The relevant error message is Cannot execute '"C:...\Qt\build-GENOVA->Clone_of_Desktop_Qt_5_4_0_MSVC2013_64bit-Debug\debug\GENOVA.exe"', Win32 error > 0n50 "The request is not supported." Debuggee initialization failed, Win32 error 0n50 "The request is not supported." What's going on here? 回答1: