import os
import sys
import random

'''
test
for python3
'''

# print out hello world
print("hello world")

# variable
name = "diwen"
print(name)

# math operator
print("5 + 2 =", 5 + 2)        # 7
print("5 - 2 =", 5 - 2)        # 3
print("5 * 2 =", 5 * 2)        # 10
print("5 / 2 =", 5 / 2)        # 2.5
print("5 % 2 =", 5 % 2)        # 1
print("5 ** 2 =", 5 ** 2)      # 25
print("5 // 2 =", 5 // 2)      # 2

multi_line_quote = '''hello
every one'''
print(multi_line_quote)