#Number
print(1)#Integer
#String
print('Hello world')
#Boolean
print(True) #참
print(False) #거짓
#Expression
print(1+1)
print('Hello '+'world') #Hello world
#Comparison operater
print(1==1) #True
print(1<2) #True
print(2<1) #False
#Membership operater
print('world' in 'Hello world') #True

import os.path
print(os.path.exists('boolean.py'))
