linux操作系统安装python3
首先是下载python3,现在的最高版本是3.1.1
for linux。
我的放置路径是/home/python下放置Python-3.1.1.tgz,执行以下系列操作:
1.解压:tar zxvf Python-3.1.1.tgz----生成解压包Python-3.1.1
2.转换到Python-3.1.1路径下,执行./configure
3.make
4.make install
在rehl5中已经默认安装了python2.4,所以要做如下操作:
#cd /usr/bin
#ll |grep python //查看该目录下python
#rm -rf python
#ln -s PREFIX/
Python-3.1.1/python ./python //PREFIX为你解压python的目录
#python
检测改正之后的python版本
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源代码下载:下载地址在这里
# 024
dict1 = {
'5064001':'Mememe',
'5064002':'tutu',
'5064003':'thrthr',
'5064004':'fofo'
}
print dict1['5064003']
# 也可以使用整型作为唯一的编号
dict2 = {
5064001:'Mememe',
506400 ......
源代码下载:下载地址在这里
# 026
aList = ['1','2','3','4']
aListCopy = aList # 其实,这里仅仅复制了一个引用
del aList[0]
print aList
print aListCopy # 两个引用指向了了同一个对象,所以打印结果一样
aListCopy = aList[:] # 这是复制整个对象的有效方法
del aList[0]
print aList
print aListCopy
......
# 027
toolName = 'Google'
if toolName.startswith('Go'):
print 'The tool\'s name starts with \"Go\".'
if 'oo' in toolName:
print 'The tool\'s name contains the stirng "oo".'
print toolName.find('gl') # 返回首次出现“gl”字符串的索引
if toolName.find('Baidu ......
源代码下载:下载地址在这里
A Byte Of Python
中关于继承有这样的文字:
Suppose you want to write a program which has to keep track of the
teachers and students in a college. They have some common
characteristics such as name, age and address. They also have specific
characteristics such as sala ......