# python课后实验（2）(Python after class experiment (2))-python

## python课后实验（2）(Python after class experiment (2))

``````for i in range(100,1000):
s = str(i)
if int(s[0])**3+int(s[1])**3+int(s[2])**3==i:
print(i,end=", ")``````

2、

``````a = eval(input("请输入年份："))
b = a%400
c = a%4
d = a%100
if b == 0 or (c == 0 and d !=0):
print(a, " 是闰年")
else:
print(a, "不是闰年")``````

3、

``````n = 0
for i in range(1, 1001):
s = 1
for j in range(2, i):
if i % j == 0:
s = s + j
if s == i:
n = n + 1
print('1000以内共有{}个完数'.format(n))``````

4、

``````s1 = sorted(a)
s2 = sorted(b)
if s1 == s2:
print("是换位字符串")
else:
print("不是换位字符串")``````

5、

``````a,b,c=float(input("第一条边：")),float(input("第二条边")),float(input("第三条边"))
if a>b :
a,b=b,a
if a>c :
a,c=c,a
if b>c :
b,c=c,b
if a+b<=c :
print('不能构成',end='')
else:
print('能构成',end='')
if a==b and b==c:
print('等边',end='')
elif a==b or b==c:
print('等腰',end='')
if a**2+b**2==c**2:
print('直角',end='')
elif a!=b and b!=c:
print('普通',end='')
print('三角形')``````

6、

``````n=int(input('请输入百分制学生成绩'))
if 90<=n<=100 :
print('A')
elif 80<=n<=89:
print('B')
elif 70<=n<=79:
print('C')
elif 60<=n<=69:
print('D')
elif 0<=n<=59:
print('不及格')
else:
print('非法百分制成绩')``````

7、

``````n=input("请输入以；间隔的数字串：")
c = n.split(";")
m=0
for i in c:
m+=eval(i)
print(m)``````
————————
``````for i in range(100,1000):
s = str(i)
if int(s[0])**3+int(s[1])**3+int(s[2])**3==i:
print(i,end=", ")``````

2、

``````a = eval(input("请输入年份："))
b = a%400
c = a%4
d = a%100
if b == 0 or (c == 0 and d !=0):
print(a, " 是闰年")
else:
print(a, "不是闰年")``````

3、

``````n = 0
for i in range(1, 1001):
s = 1
for j in range(2, i):
if i % j == 0:
s = s + j
if s == i:
n = n + 1
print('1000以内共有{}个完数'.format(n))``````

4、

``````s1 = sorted(a)
s2 = sorted(b)
if s1 == s2:
print("是换位字符串")
else:
print("不是换位字符串")``````

5、

``````a,b,c=float(input("第一条边：")),float(input("第二条边")),float(input("第三条边"))
if a>b :
a,b=b,a
if a>c :
a,c=c,a
if b>c :
b,c=c,b
if a+b<=c :
print('不能构成',end='')
else:
print('能构成',end='')
if a==b and b==c:
print('等边',end='')
elif a==b or b==c:
print('等腰',end='')
if a**2+b**2==c**2:
print('直角',end='')
elif a!=b and b!=c:
print('普通',end='')
print('三角形')``````

6、

``````n=int(input('请输入百分制学生成绩'))
if 90<=n<=100 :
print('A')
elif 80<=n<=89:
print('B')
elif 70<=n<=79:
print('C')
elif 60<=n<=69:
print('D')
elif 0<=n<=59:
print('不及格')
else:
print('非法百分制成绩')``````

7、

``````n=input("请输入以；间隔的数字串：")
c = n.split(";")
m=0
for i in c:
m+=eval(i)
print(m)``````