# output
print('Hello, world!')
print('this', 'is', 'test', 'string')
print('300 + 100 =', 300 + 100)

# input
name = input('enter your name: ')
print('hello', name)

# 格式化输出
strr = 'hhh'
num = 25
print('your name is %s' % strr)
print('the number is %d' % num)

# 查看版本
import platform
print(platform.python_version())

import sys
print(sys.version)
print(sys.version_info)