auto save

diy2.py

+num=input("请输入所要相加的数字:")
+num2=int(input("请输入相加的次数:"))
+sum=0
+str=""
+for i in range(num2):
+    str=str+num
+    sum=int(str)+sum
+print(sum)
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diy3.py

+str=input("请输入三条边:")
+nums=eval(str)
+c=list(nums)
+c.sort()
+print(c)
+if c[0]+c[1]>c[2]:
+    print("边长{}{}{}能组成三角形".format(c[0],c[1],c[2]))
+    if c[0]==c[1] or c[1]==c[2]:
+        print("是等腰三角形")
+    elif c[0]**2 + c[1]**2 == c[2]**2:
+        print("是直角三角形")
+    else:
+        print("是普通三角形")
+else:
+    print("不能组成三角形")

diy4.py

+for i in range(1,10):
+    for j in range(1,i+1):
+        print(str(j)+"*"+str(i)+"="+str(j*i),end="\t")
+    print()
\ No newline at end of file