0.common_questions.ipynb

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    "#### 在anaconda 环境中运行jupyter notebook\n",
    "***\n",
    "***\n",
    "***\n",
    "# 问题及其解决方法\n",
    "***\n",
    "***\n",
    "***"
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    "# Mac电脑如何快速找到用户目录\n",
    "　  \n",
    "- 1、在finder的偏好设置中选择“边栏”选中个人收藏下“房子的图标”，这样就用户目录，然后在边栏就可以看到用户目录，然后就可以找到目录了，或者在偏好设置中选择“通用”，然后选择磁盘，磁盘就出现在桌面了，这样也可以很方便的进入根目录，进而找到用户目录；\n",
    "\n",
    "- 2、打开任何一个文件夹（除过所有文件夹之外的文件夹），右键点击标题栏，选择Macintosh HD就可以进入更目录，然后到User目录即可；\n",
    "\n",
    "- 3、在桌面目录下，菜单“前往”-“个人”也可以进入用户目录"
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   "source": [
    "# 如何打开jupyter notebook\n",
    "\n",
    "- Mac users： 打开terminal （可以在launchpad中找到），输入：jupyter notebook\n",
    "- windows users: 在电脑左下角输入'cmd'打开terminal, 输入：jupyter notebook"
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   "source": [
    "# 在terminal里成功安装第三方的包，结果发现在notebook里无法import\n",
    "> 这个问题多出现于mac用户，因为mac有一个系统自带的python，成功安装的第三方包都被安装到了系统自带的python里。因此需要确保我们使用的是conda自己的pip，即需要指定pip的路径名，比如我的pip路径名在：/Users/chengjun/anaconda/bin/pip,那么在terminal里输入：\n",
    "\n",
    "> /Users/chengjun/anaconda/bin/pip install package_name"
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   "source": [
    "- 或者在notebook的初始页面，右上方-new-terminal,在这个terminal里输入 \n",
    "> **pip install package_name**\n",
    "- 或者通过anaconda自带的spyder安装\n",
    "- 常用的包也可以直接 \n",
    "> **conda install package_name**\n"
   ]
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   "source": [
    "# 如何查看anaconda自带的包和已经安装的包？\n",
    "> 打开terminal，输入： conda list"
   ]
  },
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   "source": [
    "# windows用户安装graphlab-create出错：unistall tornado, permission denied： tornado/speedup.pdy, 解决方法：\n",
    "- 首先，卸载tornado：\n",
    "> conda remove tornado\n",
    "- 然后，重新运行：\n",
    "> pip install -U graphlab-create"
   ]
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   "source": [
    "# 如何让graphlab在notebook中展示所有的结果（不另外打开新的窗口）\n",
    "> 运行以下代码"
   ]
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     "text": [
      "A newer version of GraphLab Create (v1.9) is available! Your current version is v1.8.5.\n",
      "\n",
      "You can use pip to upgrade the graphlab-create package. For more information see https://dato.com/products/create/upgrade.\n"
     ]
    }
   ],
   "source": [
    "import graphlab as gl\n",
    "from IPython.display import display\n",
    "from IPython.display import Image\n",
    "\n",
    "gl.canvas.set_target('ipynb')"
   ]
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   "source": [
    "# 如何卸载一个包\n",
    "> conda remove package_name"
   ]
  },
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   "source": [
    "# roll back to a specific commit\n",
    "\n",
    "#### open the terminal, and cd to your github repo, e.g., \n",
    "\n",
    "> cd github/cjc2016\n",
    "\n",
    "#### git reset --hard <old-commit-id>, and if your old-commit-id is 3808166\n",
    "\n",
    "> git reset --hard 3808166\n",
    "\n",
    "> git push origin HEAD --force\n",
    "\n",
    "http://stackoverflow.com/questions/4372435/how-can-i-rollback-a-github-repository-to-a-specific-commit"
   ]
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   "source": [
    "while 0:\n",
    "    print 'a'"
   ]
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