1.print内容
#!/usr/bin/python
print('hello world') //print("hello world")
2.print变量
#!/usr/bin/python
a='str_test' //a="str_test"
print(a)
3.print变量到句子中
#!/usr/bin/python
a='str_test' //a="str_test"
print('the test str is %s' (%a)) //print("the test str is %s" %(a)) //print("the test str is %s %s %s..." %(a,b,c,...))