save project

3.py

+a=int(input("输入一个正整数"))
+s=0
+if a%2==0:
+    for i in range(2,a+1,2):
+        s=s+1/i
+if a%2==1:
+    for i in range(1,a+1,2):
+        s=s+1/i
+print("%.2f"%s)

4.py

+for ab in range(10,100):
+    x=100+ab
+    y=ab*10+1
+    if x-y==468 or y-x==468:
+        print(ab)
\ No newline at end of file

67.py

+for gj in range(1,99):
+    for mj in range(1,99):
+        xj=100-gj-mj
+        if 5*gj+3*mj+xj/3==100:
+            print(gj,mj,xj)
\ No newline at end of file

diy3.py

-student1 = {'语文': 91, '数学': 88, '英语': 85}
-student2 = {'语文': 97, '数学': 98, '英语': 90}
-student3 = {'语文': 95, '数学': 100, '英语': 93}
-score = {'悟空': student1, '诺依': student2, '小贝': student3}    
+class Price():
+    def pay(self):
+        a=int(input("星期几"))
+        b=int(input("成人人数"))
+        c=int(input("小孩人数"))
+        if a<6:
+            print("需要支付"+str(b*100+c*50)+"元")
+        else:
+            print("需要支付"+str(b*120+c*60)+"元")
+b=Price()
+b.pay()
 
-
-
-
-# 查询并打印出输入的名字对应的所有科目的成绩
-while True :
-    name = input("名字：")
-    if name=="q":
-        break
-    elif  name in score :
-        
-        a = score[name]
-        print('='*30)
-        for k,v in a.items():
-            print(k,v)
-        print("="*30)
-        
-    else:
-        print('输入错误')
\ No newline at end of file

dvojfdi.py

+for ji in range(1,35):
+    tu=35-ji
+    if tu+ji==35 and 4*tu+2*ji==94:
+        print("兔有{}只，鸡有{}只".format(tu,ji))
\ No newline at end of file