Test-Driven Development in Python: Test First Code Later

Today we learn about test-driven development and how to easily do it in Python.

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[mehdimojaradi]

I have been waiting for this concept with your elequent way of teaching.
Thanks indeed not only for this episode but also for all other ones.

[zackplauche]

One question from the beginning: How is building a calculator class the first step if you're supposed to write your test first then code?

[NLCircle]

NeuralNine, thank you for another high quality, conchise and clear introduction to a Python feature. Extremely helpful and I like to comment you for the way you break down the 'problem' and turn it into a tutorial on how to approach this myself.

[pablocastaneda]

intro is sooo good! I would buy for a ringtone!

Thanks, it was really helpful! I've just learnt this TDD thing and wanted to try and implement it myself in my hobby project.

[BrandonNewell]

this is really well done thank you. I would love it you did more on TDD

[ScriptRaccoon]

I prefer using pytest since I don't have to write the boilerplate as with the unittest module. Also, the combination with pytest-cov gives nice coverage reports.

[hxjuoxv]

Dude, i am studying at ITMO in Russia, and I really want to thank you for the video, python tests are my homework)

[arkadiuszpaterak]

Which in your opinion is better, unittest or pytest?

[holthuizenoemoet]

would the statement if not instanace(x, int) and not instance(x, float) be always false in the case of a number?

[jparks]

If you are going to do this type of thing, you should really use the testing package that is the most popular. unittest is VERY old.

[duftcola]

I have to say that while in theory this a good way of making things I find often that testing doenst allow you to keep up the speed of the project and at the I just end up running the application and see what crashes and a folder full of unitest that became outdated