lesson2.py

# x = input()
# y = input()
# try:
#     print(float(x) + float(y))
# except(ValueError):
#     print(x + y)

# old = int(input('How are you old?\n'))
# print('I recommend it ', end='')
# if 3<=old<6:
#     print('"zayac"')
# elif 6<=old<12:
#     print('"mars"')
# elif 12<=old<16:
#     print('"mystery island"')
# elif 16<=old:
#     print('"potoc"')
# else:
#     print('-')

# n=input('enter integer number : \n')
# while type(n)!=int:
#     try:
#         n=int(n)
#     except ValueError:
#         print('wrongly')
#         n= input('enter integer number : \n ')
# if n%2==0:
#     print('chetnoe')
# else:
#     print('ne chetnoe')

# i = 0
# while i < 21:
#     print("%7d" % 2**i)
#     i += 1

# def test():
#     x=float(input())
#     if x>0:
#         positive()
#     elif x<0:
#         negative()
#     else:
#         zero()---
# def positive():
#     print('positive')
# def negative():
#     print('negative')
# def zero():
#     print('zero')
#
# test()

# def test(t):
#     a=t**2
#     b=t+10*3
#     c=a+t
#     print(a,b,c)
#     return a,b,c
#
# a,b,c =test(9)
# print(a,b,c)