正在尝试为vim安装YouCompleteMe

Question

我正在尝试为vim安装YCM，但我已经安装了vundle。所以我使用:PluginInstall来安装YCM。现在我正在遵循这一步。

编译具有C系列语言语义支持的YCM：

cd ~/.vim/bundle/YouCompleteMe
./install.py --clang-completer

当我到达目录并执行第二个命令时，我得到了错误：

Some folders in /home/shubham/.vim/bundle/YouCompleteMe/third_party/ycmd/third_party are empty; you probably forgot to run:
    git submodule update --init --recursive


Traceback (most recent call last):
  File "./install.py", line 44, in <module>
    Main()
  File "./install.py", line 33, in Main
    subprocess.check_call( [ python_binary, build_file ] + sys.argv[1:] )
  File "/home/shubham/anaconda3/lib/python3.5/subprocess.py", line 581, in check_call
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['/home/shubham/anaconda3/bin/python', '/home/shubham/.vim/bundle/YouCompleteMe/third_party/ycmd/build.py', '--clang-completer']' returned non-zero exit status 1

当我做python -V时，我得到

Python 3.5.2 :: Anaconda 4.1.1 (64-bit)

我通过添加以下命令安装了YCM

Plugin 'valloric/YouCompleteMe'

添加到~./.vimrc文件

我使用的是Ubuntu15.04，它默认安装了Python2.7，我显式地安装了anaconda3和python3。

请帮帮忙。