python基础学习（根据廖雪峰的博客练习）

<pre name="code" class="python"># -*- coding: utf-8 -*-
print "1222"
print "555","777",  "6 7 8"
name = raw_input("your name ")
print "name:",name
a = 1
if a >= 2:
print a
else:
print -a
print r"I\'m ok;"
print """line1
line2
line3"""
a = 11
print a
a = "yyyy"
print a
print 10/3
print 10.0/3
print 10%3

#输出中文,加u
print u'开车'
print "hi %s %d" % (u"d难难难",22222)

#list
classmate = ["hhh","oooo","p;ppp"]
#print classmate[-9] 
classmate.append("ddddsss")
print classmate[-1]
print len(classmate)
classmate.insert(1,"hello world")
print classmate
classmate.pop()
print classmate[-1]
classmate[0]=123
print classmate

#tupe
t = ( 1 , 2)
print t[0]
#t[1]=3

#四个空格（英文输入法）
#if elif else 用法
age = 7
if age >= 18:
print "your age is ",age
print "adult"
elif age >= 6:
print age
else:
print "your age is ",age
print "teenager"
print "aaaaaaaaaaaa"

if 1:
print "True"

#for 
names = ["zad","ddd","pppp"]
for name in names:
print name
sum = 0
for x in [1,2,3,4,5,6]:
sum = sum + x
print sum

#range 
print range(10)

sum = 0
for x in range(101):
sum = sum + x
print sum

#获取输入的数字，raw_input默认为字符串
birth = int(raw_input("birth:"))
if birth<2000:
print u"00前"
else:
print u"00后"

#映射，类似c++的map
d = {"ss":66,"dfdf":88,"ghg":99}
print d["ss"]
#覆盖ss的值
d["ss"]=50
#添加映射
d["aadwdd"]=77
print d
#通过get访问，如果不存在key则返回-1
print d.get("ss",-1)
print d.get("s1",-1)
#删除pop
d.pop("ss")
print d

#set，同样的类似c++的set，无重复集合
s = set([1,1,1,2,2,2,5,5,5])
print s
#添加元素 1将不会重复添加
s.add(4)
s.add(1)
print s
#删除
s.remove(5)
print s