python_tips some tips about python dynamically get result of expressions(动态获取表达式的结果) dynamically_get_result_of_expressions.py get non-repeating random numbers(integer)(获得不重复随机数,如:24点游戏) get_non_repeating_random_numbers.py ps: you can do 24 point game by get_non_repeating_random_numbers(1,13,4) lru_cache(缓存函数和最近一次的参数) lru_cache_test.py