# name=input('请输入你的姓名')
# print('你好',name)
# print('测试输出','第一','第二')

# name = input()
# print('hello,', name)

# print absolute value of an integer:
# a = -90
# if a >= 0:
#     print(a)
# else:
#     print(-a)

# print('I \'m ok.')

# print('''line1
# line2
# line3''')

# bool类型
print(True and True)
print(True and False)
print(False and False)

# 变量的练习
n = 123
f = 456.789
s1 = 'Hello, world'
s2 = 'Hello, \'Adam\''
s3 = r'Hello, "Bart"'
s4 = r'''Hello,
 Lisa!'''
print(n)
print(f)
print(s1)
print(s2)
print(s3)
print(s4)