Python优化轶事

Python Patterns - An Optimization Anecdote

The golden rule of optimization: don’t optimize unless you know you need to, and measure rather than guessing.

• Rule number one: only optimize when there is a proven speed bottleneck
• Small is beautiful
• Use intrinsic operations
• Avoid calling functions written in Python in your inner loop
• Local variables are faster than globals
• Try to use map(), filter() or reduce() to replace an explicit for loop, but only if you can use a built-in function
• Check your algorithms for quadratic behavior
• And last but not least: collect data

附上链接：https://www.python.org/doc/essays/list2str/