python-demo：计算合格率

计算合格率：

#!/usr/bin/python
# -*- coding: UTF-8 -*-

# 定义计算方法
def calcPercent(inStr):
    try:
        listArr = inStr.split(',')
        listArr = map(eval, listArr)
        sumCount = len(listArr)

        newList = list(filter(lambda item : item >= baseNumber, listArr));
        countNewList = len(newList)

        return '{:.2%}'.format(float(countNewList) / float(sumCount), ".1f")
    except:
        return "请输入正确的数字字符串，以','分隔"


# 基础数
baseNumber = 250
# 输入字符串
#str = '345,231,543,280,123,789,456,12'
str = ''
# 调用方法
print(calcPercent(str))

高级写法：

std = 250

def main(n, sc_list):
    q_list = list(filter(lambda x: x > std, sc_list))
    return len(q_list) / n

if __name__ == "__main__":
    inputs = input("Input the info:")
    input_list = [float(i) for i in inputs.split()]
    input_n = int(input_list[0])
    input_sc_list = input_list[1:]
    if input_n != len(input_sc_list):
        print("Lenth not right")
    print(main(input_n, input_sc_list))