is it considered good practice to ...

[ichabod801]

There is zero difference between a function defined with lambda and a standard function aside from where it can appear syntactically.

One other difference is that the __name__ attribute of a lambda is always '<lambda>', whereas the __name__ attribute of standard functions comes from the def statement. OTOH, I have never run into a situation where this mattered. And, of course, you can change that attribute.