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# 我们创建了一个generator后，基本上永远不会调用next()，而是通过for循环来迭代它，并且不需要关心StopIteration的错误

>>> g = (x * x for x in range(10))
>>> for n in g:
...     print(n)
... 
0
1
4
9

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>>> import os # 导入os模块，模块的概念后面讲到
>>> [d for d in os.listdir('.')] # os.listdir可以列出文件和目录
['.emacs.d', '.ssh', '.Trash', 'Adlm', 'Applications', 'Desktop', 'Documents', 'Downloads', 'Library', 'Movies', 'Music', 'Pictures', 'Public', 'VirtualBox VMs', 'Workspace', 'XCode']

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>>> list(range(1, 11))
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]

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# Python内置的enumerate函数可以把一个list变成索引-元素对，这样就可以在for循环中同时迭代索引和元素本身：
>>> for i, value in enumerate(['A', 'B', 'C']):
...     print(i, value)
...
0 A
1 B
2 C

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# 判断对象是否是可以迭代的对象
>>> from collections import Iterable
>>> isinstance('abc', Iterable) # str是否可迭代
True
>>> isinstance([1,2,3], Iterable) # list是否可迭代
True
>>> isinstance(123, Iterable) # 整数是否可迭代
False

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           // 获取controller中的所有action和description
           Assembly asm = Assembly.GetAssembly(typeof(NjModelmgr.MvcApplication));
            var controlleractionlist = asm.GetTypes()
                    .Where(type => typeof(System.Web.Mvc.Controller).IsAssignableFrom(type))
                    .SelectMany(type => type.GetMethods(BindingFlags.Instance | BindingFlags.DeclaredOnly | BindingFlags.Public))
                    .Where(m => !m.GetCustomAttributes(typeof(System.Runtime.CompilerServices.CompilerGeneratedAttribute), true).Any())
                    .Select(x => new
                    {
                        Controller = x.DeclaringType.Name,

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//新增或者更新SPListItem中的多选字段
SPFieldMultiChoiceValue values = new SPFieldMultiChoiceValue();
      foreach (JObject item7 in item3)
      {
          var itemChoiceName = item7.GetValue("key").ToString();
          //var itemChoiceValue = item7.GetValue("value").ToString();
          values.Add(itemChoiceName);
      }
      spListItem[itemName] = values;

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using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp14
{

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using Microsoft.SharePoint;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Text;

namespace ConsoleApplication2
{
    class Program

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using AutoMapper;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp10
{
    class Program