A series of possibly non-obvious solutions to practical problems.
Could also be seen as a series of practical solutions to non-obvious problems.
Not just "stupid Python tricks".
Python is not Perl (give thanks!), but sometimes there are multiple approaches to the same problems.
In real life, optimal solutions are not always necessary. How hard you work to solve a sub-problem is dependent on how heavily the resulting code will be exercised, how it will be maintained, what test cases are available, ...
Guido's article about optimising python (on http://www.python.org/) is an example of working from the obvious to the judo-like solution.