完成第一题

data.csv

@@ -0,0 +1,7 @@
+,name,sex,age
+0,Alice,1,20
+1,Bob,1,20
+2,Chunk,1,20
+3,David,0,20
+4,Eva,0,19
+5,Frank,0,18

gen_data.py

@@ -0,0 +1,31 @@
+import pandas as pd
+import random
+from itertools import product
+
+names = ['Alice', 'Bob', 'Chunk', 'David', 'Eva', 'Frank']
+course = ['A', 'B', 'C']
+age = [random.randint(18, 20) for _ in range(len(names))]
+
+
+stu = pd.DataFrame({
+    'name':names,
+    'sex':[random.randint(0, 1) for _ in range(len(names))],
+    'age':age,
+})
+
+stu.to_csv('data.csv')
+
+p = product(names, course)
+names.clear()
+course.clear()
+for x, y in p:
+    names.append(x)
+    course.append(y)
+
+score = pd.DataFrame({
+    'name':names,
+    'course':course,
+    'score':[random.randint(0, 100) for _ in range(len(names))]
+})
+
+score.to_csv('score.csv')

question1.py

@@ -0,0 +1,42 @@
+import random
+
+class Student:
+    def __init__(self, name, sno, sex, age):
+        self.name = name
+        self.sno = sno
+        self.sex = sex
+        self.age = age
+        self.score = dict()
+        self.total_score = 0
+
+    def update_score(self, course, score):
+        self.score[course] = score
+        self.total_score += score
+
+    def get_avg(self):
+        return self.total_score / len(self.score)
+
+if __name__ == "__main__":
+    stu = dict()
+    with open('data.csv', 'r') as f:
+        lines = f.readlines()
+        for index, l in enumerate(lines):
+            if index == 0:
+                continue
+            w = l.split(',')
+            if len(w) > 1:
+                s = Student(w[1], w[0], w[2], w[3])
+                stu[w[1]] = s
+    with open('score.csv', 'r') as f:
+        lines = f.readlines()
+        for index, l in enumerate(lines):
+            if index == 0:
+                continue
+            w = l.split(',')
+            if len(w) > 1:
+                stu[w[1]].update_score(w[2], eval(w[3]))
+    stu = list(stu.values())
+    stu.sort(key=lambda x : x.get_avg())
+    for s in stu:
+        print("name:{}, avg:{}".format(s.name, s.get_avg()))
+

score.csv

@@ -0,0 +1,19 @@
+,name,course,score
+0,Alice,A,15
+1,Alice,B,63
+2,Alice,C,70
+3,Bob,A,75
+4,Bob,B,22
+5,Bob,C,46
+6,Chunk,A,75
+7,Chunk,B,21
+8,Chunk,C,21
+9,David,A,78
+10,David,B,24
+11,David,C,10
+12,Eva,A,61
+13,Eva,B,8
+14,Eva,C,44
+15,Frank,A,76
+16,Frank,B,41
+17,Frank,C,57