用python split()方法list1="<2018-09-19 15:09:54,159> (Thread-2) [INFO ] (PressureListener.java:25) - bond38,cost:1"cost1= list1.split("cost:")[1]print(cost1)值顷肆:1用一个猛兄循环就可以取到所有cost的值了,转换成int类型,就可雀知轿以计算均值了