Installing Python 安装Python
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Installing Python 安装Python
❝ Tempora mutantur nos et mutamur in illis. (Times change, and we change with them.) ❞
— ancient Roman proverb
Diving In
Welcome to Python 3. Let's dive in. In this chapter, you'll install the version of Python 3 that's right for you.
Which Python Is Right For You? 哪个版本适合你
The first thing you need to do with Python is install it. Or do you?
If you're using an account on a hosted server, your ISP may have already installed Python 3. If you’re running Linux at home, you may already have Python 3, too. Most popular GNU/Linux distributions come with Python 2 in the default installation; a small but growing number of distributions also include Python 3. Mac OS X includes a command-line version of Python 2, but as of this writing it does not include Python 3. Microsoft Windows does not come with any version of Python. But don’t despair! You can point-and-click your way through installing Python, regardless of what operating system you have.让咱们自己来安装Python,无论你所用的是什么系统。
The easiest way to check for Python 3 on your Linux or Mac OS X system is to get to a command line. On Linux, look in your Applications menu for a program called Terminal. (It may be in a submenu like Accessories or System.) On Mac OS X, there is an application called Terminal.app in your /Application/Utilities/ folder.
Once you’re at a command line prompt, just type python3 (all lowercase, no spaces) and see what happens. On my home Linux system, Python 3 is already installed, and this command gets me into the Python interactive shell.
在命令行下输入 python3 ,来检查是否安装了python3
mark@atlantis:~$ python3
Python 3.0.1+ (r301:69556, Apr 15 2009, 17:25:52)
[GCC 4.3.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>>
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Python中文件操作可以通过open函数,这的确很像C语言中的fopen。通过open函数获取一个file object,然后调用read(),write()等方法对文件进行读写操作。
1.open
使用open打开文件后一定要记得调用文件对象的close()方法。比如可以用try/finally语句来确保最后能关闭文件。
file_object = open('thefile.txt' ......
两种不同的语言,不同的表达!
Python脚本实现.
""
"
File Name : clean.py
File Date : 2009/11/5 14:22:56
Author : DannyLai
Purpose : Cle ......
原文:http://www.klipdas.com/blog/?p=python-decorator
python装饰器介绍
Python 2.2中引入的 classmethod() 和 staticmethod() 内置函数,你可以这样调用classmethod():
class A:
def foo(self, y):
print y
foo = classmethod(foo)
也可以这样:
class A:
@classmethod
def foo(sel ......
今天遇到一个一个问题,是将字符串类型的时间转化为UTC时间。例如time_str = "2009/11/09 12:23:23" 转化为UTC int型。
找了一些资料,发现time模块就能完成这个转换。
import time
time_str = "2009/11/09 12:23:23"
time_s = time.strptime(time_str,"%Y/%m/%d %H:%M:%S")
utc_f = time.mktime(time_s)
utc_i = int ......