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Debugging

U
Umang Shukla

This is a small introduction for new joinees in Kuliza about debugging. It include debugging using python for backend and frontend debugging(DOM, Network, Javascript) using the developer tools provided my Google. Please do checkout the links at last. they are very helpful for future references.

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Debugging
Developer at Kuliza. You can find me at: @mascot6699 umang.shukla@kuliza.com Hello! I am Umang
Debugging Debugging is the process of finding and resolving bugs or defects that prevent correct operation of computer software or a system. DEBUGGING ?
If you dont debug you are a code genius OR you dont know how!
Agenda Python DOM Javascript Network
Python Debugging
PyCharm
Python debugger (ipdb or pdb) Install ipython and ipdb for all projects import ipdb; ipdb.set_trace() print locals(), args continue, step over
Logging (smarter prints) 1. import logging 2. 3. # create logger with 'error_log' 4. logger = logging.getLogger('error_log') 5. logger.setLevel(logging.DEBUG) 6. 7. # logging things in logger 8. logger.info('this is info') 9. logger.errors('this is error') 10. logger.warning('this is warning') 11. logger.debug('this is debug')
DOM Debugging
Lets review some concepts
DOM Debugging Rearrange/add/delete nodes Edit attributes Edit css See the event listeners
Javascript Debugging
Javascript Debugging
Javascript Debugging Set debug points Use console Set watch expressions Continue, Step over, Step Into, Step Out See stack trace to find calling function
Network Debugging
Network Debugging Watch requests Read headers and response Learn cURL and postman!
Other resources https://developer.chrome.com/devtools/docs/remote-debugging https://developer.chrome.com/devtools/docs/tips-and-tricks http://getfirebug.com/firebuglite http://stackoverflow.com/questions/5967241/how-to-execute- multi-line-statements-within-pythons-own-debugger-pdb http://frid.github.io/blog/2014/06/05/python-ipdb-cheatsheet/ http://www.slideshare.net/noelled/debugging-python-pdb-ndaley- 50574986
Any Questions
Credits Special thanks to all the people who made and released these awesome resources for free: Presentation template by 際際滷sCarnival Photographs by Unsplash

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