第1关 输入数据创建列表
score_ls = []
for i in range(10):
a = float(input())
score_ls.append(a)
print(score_ls)
第2关 计算每位选手的成绩
score_ls = []
for i in range(10):
a = float(input())
score_ls.append(a)
print(score_ls)
print(f'最高分{max(score_ls):.3f},最低分{min(score_ls):.3f},平均分{sum(score_ls) / len(score_ls):.3f}')
第3关 去除一个最高分和一个最低分
score_ls = []
for i in range(10):
a = float(input())
score_ls.append(a)
print(score_ls)
score_ls.remove(max(score_ls))
score_ls.remove(min(score_ls))
print(score_ls)
print(f'最高分{max(score_ls):.3f},最低分{min(score_ls):.3f},平均分{sum(score_ls) / len(score_ls):.3f}')
第4关 计算中位数成绩
score_ls = []
for i in range(10):
a = float(input())
score_ls.append(a)
print(score_ls)
score_ls.remove(max(score_ls))
score_ls.remove(min(score_ls))
score_ls.sort()
print(score_ls)
print(f'去掉最高分和最低分后,中位数成绩为:{(score_ls[len(score_ls)//2]+score_ls[len(score_ls)//2-1])/2:.3f}')
第5关 去除弃权评委成绩
score_ls = []
for i in range(10):
a = input()
score_ls.append(a)
print(score_ls)
while '' in score_ls:
score_ls.remove('')
print(score_ls)
score_ls = list(map(float, score_ls))
score_ls.remove(max(score_ls))
score_ls.remove(min(score_ls))
print(score_ls)
print(f'{max(score_ls):.3f}, {min(score_ls):.3f}, {sum(score_ls) / len(score_ls):.3f}')
第6关 将平均成绩附加到列表末尾
score_ls = []
for i in range(10):
a = input()
score_ls.append(a)
print(score_ls)
while '' in score_ls:
score_ls.remove('')
score = list(map(str, score_ls))
score_ls = list(map(float, score_ls))
score_ls.remove(max(score_ls))
score_ls.remove(min(score_ls))
avg_score = sum(map(float, score_ls))/len(score_ls)
score.append(str(round(avg_score, 2)))
print(score)
第7关 读文件到二维列表
def file_to_lst(file,n):
list1 = []
with open(file) as fr:
for i in range(n):
score_ls = fr.readline().strip()
score_ls = score_ls.split(',')
list1.append(score_ls)
print(list1)
if __name__ == '__main__':
filename = '/data/bigfiles/mark_score.csv'
n = int(input())
file_to_lst(filename,n)
第8关 二维列表数据分析
def file_to_lst(file, n):
"""将文件名变量file指向的文件中的用逗号分隔的数据转为二维列表"""
list1 = []
with open(file) as fr: # 创建文件对象
for i in range(n):
score_ls = fr.readline().strip()
score_ls = score_ls.split(',')
list1.append(score_ls)
return list1
if __name__ == '__main__':
filename = '/data/bigfiles/mark_score.csv'
n = int(input())
list2=[]
for lst in file_to_lst(filename, n): # 遍历二维列表,lst为子列表
while '' in lst: # 循环判定子列表中是否还有空字符串
lst.remove('') # 移除子列表中的空字符串
lst = list(map(float, lst)) # 当前子列表转浮点数
lst.remove(max(lst))
lst.remove(min(lst))
avg_score = sum(map(float, lst))/len(lst)
lst.append(float(round(avg_score, 2)))
list2.append(lst)
print(list2)
第9关 在看