[python]print简单用法和读取用户输入

代码开发环境：Eclipse

1.打印字符串：

print "Hello world!"

myString = "Hello world!"
print myString

运行结果：

Hello world!
Hello world!

 2.格式化字符串

print "%s is in the left of railway station %d" % ("huizhi", 2)

运行结果：

huizhi is in the left of railway station 2

 3.读取用户输入

输入字符串：

user = raw_input('Enter login name: ')
print "Your login name is: ", user

运行结果：

Enter login name: root
Your login name is:  root

 

输入数字：

num = raw_input('Now enter a number: ')
print 'Doubling your number: %d' % (int(num) * 2)

运行结果：

Now enter a number: 1024
Doubling your number: 2048

 注意：

需要利用内建函数int()将数值字符串转换成整数值，然后才可以对它进行数学运算。