以下是几种不同功能的Python简单成绩统计程序示例： ### 简单输入成绩并统计总分和平均分 ```python name = input("请输入姓名：") # 输入科目1值 km = input("请输入科目1：") # 输入成绩1值 cj = float(input("请输入成绩1：")) # 输入科目2值 km2 = input("请输入科目2：") # 输入成绩2值 cj2 = float(input("请输入成绩2：")) # 输入科目3值 km3 = input("请输入科目3：") # 输入成绩3值 cj3 = float(input("请输入成绩3：")) # 打印成绩表 print("成绩表".center(17, "-")) # 打印表头 print("姓名", "科目", "成绩", sep="\t") # 分别使用%,format,sep方法打印三科科目和成绩 print(name, km, cj, sep="\t") print("%-8s%-8s%-5.1f" % (name, km2, cj2)) print("{0:8s}{1:8s}{2:<5.1f}".format(name, km3, cj3)) # 打印总分平均分 print("总分：", cj + cj2 + cj3) print("平均分：", (cj + cj2 + cj3) / 3) ``` ### 成绩分段统计 ```python # 假设已经有了一个成绩列表 scores = [85, 92, 78, 65, 45, 90, 88, 72, 60, 55] # 初始化各分数段的人数 segment_90_100 = 0 segment_80_89 = 0 segment_70_79 = 0 segment_60_69 = 0 segment_0_59 = 0 # 统计各分数段的人数 for score in scores: if 90 <= score <= 100: segment_90_100 += 1 elif 80 <= score <= 89: segment_80_89 += 1 elif 70 <= score <= 79: segment_70_79 += 1 elif 60 <= score <= 69: segment_60_69 += 1 else: segment_0_59 += 1 # 计算百分比 total = len(scores) percent_90_100 = segment_90_100 / total * 100 percent_80_89 = segment_80_89 / total * 100 percent_70_79 = segment_70_79 / total * 100 percent_60_69 = segment_60_69 / total * 100 percent_0_59 = segment_0_59 / total * 100 # 输出最高分、最低分和平均分 max_score = max(scores) min_score = min(scores) average_score = sum(scores) / total print("90 - 100分人数：", segment_90_100, "，百分比：", percent_90_100, "%") print("80 - 89分人数：", segment_80_89, "，百分比：", percent_80_89, "%") print("70 - 79分人数：", segment_70_79, "，百分比：", percent_70_79, "%") print("60 - 69分人数：", segment_60_69, "，百分比：", percent_60_69, "%") print("0 - 59分人数：", segment_0_59, "，百分比：", percent_0_59, "%") print("最高分：", max_score) print("最低分：", min_score) print("平均分：", average_score) ``` ### 显示所有学生信息和人数统计（假设数据存储在文件中） ```python import os file_name = 'students.txt' format = "{:^10}{:^10}{:^10}{:^10}{:^10}{:^10}" # 显示所有信息 def show(item): item = dict(eval(item)) print(format.format(item['id'], item['name'], item['english'], item['python'], item['java'], int(item['python'] + item['english'] + item['java']))) def display(): if os.path.exists(file_name): with open(file_name, 'r', encoding='utf-8') as a: content_txt = a.readlines() print(format.format('ID', '姓名', '英语成绩', 'python', 'Java', '总成绩')) for item in content_txt: show(item) def total(): i = 0 if os.path.exists(file_name): with open(file_name, 'r', encoding='utf-8') as a: for item in a.readlines(): i += 1 print("学生人数为：\n", i) else: print("数据库文件不存在！") # 调用函数 display() total() ```