July 2018
Intermediate to advanced
310 pages
8h 21m
Chinese
Content preview from 深度学习入门 : 基于Python的理论与实现
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第 1章 Python 入门
4
1.3
Python解释器
完成
Python
的安装后，要先确认一下
Python
的版本。打开终端（
Windows
中的命令行窗口），输入
python --version
命令，该命令会输出已经安装的
Python
的版本信息。
$ python --version
Python 3.4.1 :: Anaconda 2.1.0 (x86_64)
如上所示，显示了
Python
3.4.1（根据实际安装的版本，版本号可能不同），
说明已正确安装了
Python
3.
x
。接着输入
python
，启动
Python
解释器。
$ python
Python 3.4.1 |Anaconda 2.1.0 (x86_64)| (default, Sep 10 2014, 17:24:09)
[GCC 4.2.1 (Apple Inc. build 5577)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>>
Python
解释器也被称为“对话模式”，用户能够以和
Python
对话的方式
进行编程。比如，当用户询问“1
+
2 等于几？”的时候，
Python
解释器会回
答“ 3”，所谓对话模式，就是指这样的交互。现在，我们实际输入一下看看。
>>> 1 + 2
3
Python
解释器可以像这样进行对话式（交互式）的编程。下面，我们使
用这个对话模式，来看几个简单的
Python
编程的例子。
1.3.1
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.