python——脚本和print
脚本和print
1.脚本文件
《Python 基础教程》(第二版)中 P118页,原操作为下:
1 _metaclass_ = type
2
3 class Person:
4 def setName(self,name):
5 self.name = name
6 def getName(self):
7 return self.name
8 def greetName(self):
9 print "hello.world I'm %s"%self.name
之后在命令行输入
>>foo == Person()
>>foo.setName('luke skywalke')
>>foo.greet()
修改成文本后的完整脚本:
#!/usr/bin/env python
#coding=UTF8 #汉字需要加上这个,防止乱码 _metaclass_ = type class Person:
def setName(self,name):
self.name = name
def getName(self):
return self.name
def greetName(self):
# print "hello.world I'm %s"%self.name
print "hello.world,I am", self.name #这几种输出格式都可以
# print self.name + ' 你好'
# print self.name,'hello'
foo = Person()
foo.setName('luke skywalker')
foo.greetName()
运行结果:L14运行结果
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" alt="" />
注意1:函数输出和调用,在最后不需要写成print foo.greetName(),直接写成foo.greetName()即可,应为调用了函数foo.greetName(),函数中自带print,如果没有调用,直接输出的话,需要写成 print输出形式。
2.print输出形式:分为格式化输出(带%)和直接输出(不带%) 可以参见网页:bbs.csdn.net/topics/390277547?page=1
格式化输出%后加相应的类型即可
直接输出则是用‘+’或者‘,’相连
print中你所看到的
print ("%s is %d old" %(name,age)) 中的
"%s is %d old" 和 (name,age) 中间的那个%,表示格式化字符串的分隔符。
%前面的 "%s is %d old" 表示要输出的内容,其中带有变量类型
%后面的 (name,age) 表示以此对应前面输出中的%xxx的变量
如果不带%的话,即:
print ("%s is %d old" %(name,age))
也可以写成
print(name," is ",str(age)," old")
或者是:
print(name + " is " + str(age) + " old")
其中str(age)表示把整数25转换为字符串'25'
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