第1节完成

Author: yidao620c

Diff for: .gitignore

@@ -1 +1,3 @@
-build/
+build/
+.idea/
+*.pyc

Diff for: .idea/.name

@@ -0,0 +1,7 @@
+#!/usr/bin/env python
+# -*- encoding: utf-8 -*-
+"""
+Topic: sample
+Desc : 
+"""
+

Diff for: .idea/encodings.xml

@@ -0,0 +1,7 @@
+#!/usr/bin/env python
+# -*- encoding: utf-8 -*-
+"""
+Topic: sample
+Desc : 
+"""
+

Diff for: .idea/inspectionProfiles/Project_Default.xml

@@ -9,11 +9,15 @@
 * 博客：    http://yidao620c.iteye.com/
 * GitHub：  https://github.com/yidao620c
 
+|
+|
+|
+
 *主要贡献者*
 
 1. 夏丹 ([email protected])
-2. 梁永威 (415320557@qq.com)
-3. 莫浩文 (453166604@qq.com)
+2. 张三 (zhangsan@gmail.com)
+3. lisi (lisi@gmail.com)
 
 |
 |

Diff for: .idea/inspectionProfiles/profiles_settings.xml

@@ -5,14 +5,79 @@
 ----------
 问题
 ----------
-You have an N-element tuple or sequence that you would like to unpack into a collection of N variables.
+现在有一个包含N个元素的元祖或者是序列，请问怎样将它里面的值解压后同时赋值给N变量
 
 ----------
 解决方案
 ----------
-Any sequence (or iterable) can be unpacked into variables using a simple assignment operation. The only requirement is that the number of variables and structure match the sequence. For example:
+任何的序列(或者是可迭代对象)可以通过一个简单的赋值语句解压并赋值给多个变量。
+唯一的前提就是变量的数量必须跟序列元素的数量是一样的。代码示例：
+
+.. code-block:: python
+
+    >>> p = (4, 5)
+    >>> x, y = p
+    >>> x
+    4
+    >>> y
+    5
+    >>>
+    >>> data = [ 'ACME', 50, 91.1, (2012, 12, 21) ]
+    >>> name, shares, price, date = data
+    >>> name
+    'ACME'
+    >>> date
+    (2012, 12, 21)
+    >>> name, shares, price, (year, mon, day) = data
+    >>> name
+    'ACME'
+    >>> year
+    2012
+    >>> mon
+    12
+    >>> day
+    21
+    >>>
+
+如果变量个数和序列元素的个数不匹配，会产生一个异常，代码示例：
+
+.. code-block:: python
+
+    >>> p = (4, 5)
+    >>> x, y, z = p
+    Traceback (most recent call last):
+    File "<stdin>", line 1, in <module>
+    ValueError: need more than 2 values to unpack
+    >>>
 
 ----------
 讨论
 ----------
-Unpacking actually works with any object that happens to be iterable, not just tuples or lists. This includes strings, files, iterators, and generators. For example:
+实际上，这种解压赋值可以用在任何可迭代对象上面，而不仅仅是列表或者元祖。
+包括字符串，文件对象，迭代器和生成器。代码示例：
+
+.. code-block:: python
+
+    >>> s = 'Hello'
+    >>> a, b, c, d, e = s
+    >>> a
+    'H'
+    >>> b
+    'e'
+    >>> e
+    'o'
+    >>>
+
+有时候，你可能只想解压一部分，丢弃其他的值。对于这种情况Python并没有提供特殊的语法。
+但是你可以使用任意变量名去占位，到时候丢掉这些变量就行了。代码示例：
+.. code-block::python
+
+    >>> data = [ 'ACME', 50, 91.1, (2012, 12, 21) ]
+    >>> _, shares, price, _ = data
+    >>> shares
+    50
+    >>> price
+    91.1
+    >>>
+
+你必须保证你选用的那些占位变量名在其他地方没被使用到。

Diff for: .idea/misc.xml

@@ -2,12 +2,11 @@
 第一章：数据结构和算法
 =============================
 
-Python provides a variety of useful built-in data structures, such as lists, sets, and dictionaries.
-For the most part, the use of these structures is straightforward. However,
-common questions concerning searching, sorting, ordering, and filtering often arise.
-Thus, the goal of this chapter is to discuss common data structures and algorithms
-involving data. In addition, treatment is given to the various data structures contained
-in the collections module.
+Python提供了大量的内置数据结构，包括列表，集合以及字典。大多数情况下使用这些数据结构式很简单的。
+但是，我们也会经常碰到到诸如查询，排序和过滤等等这些普遍存在的问题。
+因此，这一章的目的就是讨论这些比较常见的问题和算法。
+另外，我们也会给出在集合模块collections当中操作这些数据结构的方法。
+
 
 Contents: