def main():

     try:

         number1,number2=eval(input("please enter two number"))

         result=number1/number2

     except ZeroDivisionError:

         print("the division is 0",result)

     except SyntaxError:

         print("syntax is wrong")

     else:

         print("ok the result is ",result)

     finally:

                              print("i don't know")

 main()

 Python 3.6.1rc1 (v3.6.1rc1^0:e0fbe5feee4f9c00f09eb9659c2182183036261a, Mar  4 2017, 20:00:12) [MSC v.1900 64 bit (AMD64)] on win32

 Type "copyright", "credits" or "license()" for more information.

 >>>

 = RESTART: C:/Users/lenovo/AppData/Local/Programs/Python/Python36/pytho2.py =

 please enter two number1 3

 syntax is wrong

 i don't know

 >>> main()

 please enter two number1,2

 ok the result is  0.5

 i don't know

 >>> main()

 please enter two number

 syntax is wrong

 i don't know

 >>> main()

 please enter two number1,0

 i don't know

 Traceback (most recent call last):

   File "C:/Users/lenovo/AppData/Local/Programs/Python/Python36/pytho2.py", line 4, in main

     result=number1/number2

 ZeroDivisionError: division by zero

 During handling of the above exception, another exception occurred:

 Traceback (most recent call last):

   File "<pyshell#3>", line 1, in <module>

     main()

   File "C:/Users/lenovo/AppData/Local/Programs/Python/Python36/pytho2.py", line 6, in main

     print("the division is 0",result)

 UnboundLocalError: local variable 'result' referenced before assignment

 >>> main()

 please enter two number1.1,0.0

 i don't know

 Traceback (most recent call last):

   File "C:/Users/lenovo/AppData/Local/Programs/Python/Python36/pytho2.py", line 4, in main

     result=number1/number2

 ZeroDivisionError: float division by zero

 During handling of the above exception, another exception occurred:

 Traceback (most recent call last):

   File "<pyshell#4>", line 1, in <module>

     main()

   File "C:/Users/lenovo/AppData/Local/Programs/Python/Python36/pytho2.py", line 6, in main

     print("the division is 0",result)

 UnboundLocalError: local variable 'result' referenced before assignment

 >>>

 = RESTART: C:/Users/lenovo/AppData/Local/Programs/Python/Python36/pytho2.py =

 please enter two number

 1,1

 ok the result is  1.0

 i don't know

 >>> python2.py

 Traceback (most recent call last):

   File "<pyshell#5>", line 1, in <module>

     python2.py

 NameError: name 'python2' is not defined

 >>> pytho2.py

 Traceback (most recent call last):

   File "<pyshell#6>", line 1, in <module>

     pytho2.py

 NameError: name 'pytho2' is not defined

 >>> main

 <function main at 0x0000013B8E633E18>

 >>> main()

 please enter two number

 1.1,0.0

 i don't know

 Traceback (most recent call last):

   File "C:/Users/lenovo/AppData/Local/Programs/Python/Python36/pytho2.py", line 4, in main

     result=number1/number2

 ZeroDivisionError: float division by zero

 During handling of the above exception, another exception occurred:

 Traceback (most recent call last):

   File "<pyshell#8>", line 1, in <module>

     main()

   File "C:/Users/lenovo/AppData/Local/Programs/Python/Python36/pytho2.py", line 6, in main

     print("the division is 0")

 UnboundLocalError: local variable 'result' referenced before assignment

 >>>

 = RESTART: C:/Users/lenovo/AppData/Local/Programs/Python/Python36/pytho2.py =

 please enter two number

 1,0

 the division is 0

 i don't know

 >>> 

 def root():

     try:

         print("please enter threes numbers:\n")

         a,b,c=input("yes please such as(z,x,y)")

         discRoot=math.sqrt(b*b-4*a*c)

         root1=(-b+discRoot)/(2*a)

         root2=(-b-discRoot)/(2*a)

         print("the root is",root1,root2)

     except ValueError:

         print("\n no really root)

 root()

 import math

 def main1():

     try:

         number1,number2=eval(input("please enter two number\n"))

         result=number1/number2

     #except ZeroDivisionError:

      #   print("the division is 0")

     except ZeroDivisionError:

         print("the division is 0")

     except SyntaxError:

         print("syntax is wrong")

     else:

         print("ok the result is ",result)

     finally:

                              print("i don't know")

 def root():

     try:

         print("please enter threes numbers:\n")

         a,b,c=eval(input("yes please such as(z,x,y):"))

         print("www")

         discRoot=math.sqrt(b * b - 4 * a * c)

         print("hey here")

         root1=(-b+discRoot)/(2*a)

         root2=(-b-discRoot)/(2*a)

         print("the root is",root1,root2)

     except ValueError:

         print("\n no really root")

 root()