title: Why I could not install the line_profiler？
body: <p>my computer is win10,installed VS2015,python 3.7.3.</p>
  
  <p>when I use jupyter notebook，I found that "%paste" is invalid,the error shows that "UsageError: Line magic function <code>%paste</code> not found."
  Then I found that the package 'line_profiler' is not installed.
  So I install it ,using "pip install line_profiler"
  however,many red lines occur.</p>
  
  <p>because I have VS2015,so I could not install visual cpp build tools,which is the answer I have found on sites.
  So i dont know how to do with it.
  Even it is difficult for me to understand the error information.</p>
  
  <pre><code>ERROR: Complete output from command 'd:\python\python.exe' -u -c 'import setuptools, 
  tokenize;__file__='"'"'C:\\Users\\AMARAN~1\\AppData\\Local\\Temp\\pip-    install-o1auvf_5\\line-profiler\\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:\Users\AMARAN~1\AppData\Local\Temp\pip-record-rymmwo49\install-record.txt' --single-version-externally-managed --compile:
  
  ERROR: Could not import Cython. Using the available pre-generated C file.
  
  running install
  
  running build
  
  running build_py
  
  creating build
  
  creating build\lib.win-amd64-3.7
  
  copying line_profiler.py -&gt; build\lib.win-amd64-3.7
  
  copying kernprof.py -&gt; build\lib.win-amd64-3.7
  
  copying line_profiler_py35.py -&gt; build\lib.win-amd64-3.7
  
  running build_ext
  
  building '_line_profiler' extension
  
  creating build\temp.win-amd64-3.7
  
  creating build\temp.win-amd64-3.7\Release
  
  C:\Program Files (x86)\Microsoft Visual Studio 
  14.0\VC\BIN\x86_amd64\cl.exe /c /nologo /Ox /W3 /GL /DNDEBUG /MD -
  Id:\python\include -Id:\python\include "-IC:\Program Files             (x86)\Microsoft Visual Studio 14.0\VC\INCLUDE" "-IC:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\ATLMFC\INCLUDE" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.10240.0\ucrt" "-IC:\Program Files (x86)\Windows Kits\NETFXSDK\4.6.1\include\um" "-IC:\Program Files (x86)\Windows Kits\8.1\include\\shared" "-IC:\Program Files (x86)\Windows Kits\8.1\include\\um" "-IC:\Program Files (x86)\Windows Kits\8.1\include\\winrt" /Tc_line_profiler.c /Fobuild\temp.win-amd64-3.7\Release\_line_profiler.obj
  _line_profiler.c
  _line_profiler.c(7890): error C2039: “exc_type”: 不是“_ts”的成员
   _line_profiler.c(7890): error C2039: “exc_type”: 不是“_ts”的成员
  d:\python\include\pystate.h(212): note: 参见“_ts”的声明
  _line_profiler.c(7891): error C2039: “exc_value”: 不是“_ts”的成员
  d:\python\include\pystate.h(212): note: 参见“_ts”的声明
  _line_profiler.c(7892): error C2039: “exc_traceback”: 不是“_ts”的成员
  d:\python\include\pystate.h(212): note: 参见“_ts”的声明
  _line_profiler.c(7899): error C2039: “exc_type”: 不是“_ts”的成员
  d:\python\include\pystate.h(212): note: 参见“_ts”的声明
  _line_profiler.c(7900): error C2039: “exc_value”: 不是“_ts”的成员
  d:\python\include\pystate.h(212): note: 参见“_ts”的声明
  _line_profiler.c(7901): error C2039: “exc_traceback”: 不是“_ts”的成员
  d:\python\include\pystate.h(212): note: 参见“_ts”的声明
  _line_profiler.c(7902): error C2039: “exc_type”: 不是“_ts”的成员
  d:\python\include\pystate.h(212): note: 参见“_ts”的声明
  _line_profiler.c(7903): error C2039: “exc_value”: 不是“_ts”的成员
  d:\python\include\pystate.h(212): note: 参见“_ts”的声明
  _line_profiler.c(7904): error C2039: “exc_traceback”: 不是“_ts”的成员
  d:\python\include\pystate.h(212): note: 参见“_ts”的声明
  _line_profiler.c(7959): error C2039: “exc_type”: 不是“_ts”的成员
  d:\python\include\pystate.h(212): note: 参见“_ts”的声明
  _line_profiler.c(7960): error C2039: “exc_value”: 不是“_ts”的成员
  d:\python\include\pystate.h(212): note: 参见“_ts”的声明
  _line_profiler.c(7961): error C2039: “exc_traceback”: 不是“_ts”的成员
  d:\python\include\pystate.h(212): note: 参见“_ts”的声明
  _line_profiler.c(7962): error C2039: “exc_type”: 不是“_ts”的成员
  d:\python\include\pystate.h(212): note: 参见“_ts”的声明
  _line_profiler.c(7963): error C2039: “exc_value”: 不是“_ts”的成员
  d:\python\include\pystate.h(212): note: 参见“_ts”的声明
  _line_profiler.c(7964): error C2039: “exc_traceback”: 不是“_ts”的成员
  d:\python\include\pystate.h(212): note: 参见“_ts”的声明
  error: command 'C:\\Program Files (x86)\\Microsoft Visual Studio 14.0\\VC\\BIN\\x86_amd64\\cl.exe' failed with exit status 2
  ----------------------------------------
  ERROR: Command "'d:\python\python.exe' -u -c 'import setuptools, tokenize;__file__='"'"'C:\\Users\\AMARAN~1\\AppData\\Local\\Temp\\pip-install-o1auvf_5\\line-profiler\\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:\Users\AMARAN~1\AppData\Local\Temp\pip-record-rymmwo49\install-record.txt' --single-version-externally-managed --compile" failed with error code 1 in C:\Users\AMARAN~1\AppData\Local\Temp\pip-install-o1auvf_5\line-profiler\
  </code></pre>
  
  <p>First,I want to know how to solve the problem.</p>
  
  <p>Second,I want to konw what is wrong.</p>
  
  <p>Third,I want to know what's the meaning of every error,because they are a bit obscure.</p>
  
  <p>PS:"“exc_type”: 不是“_ts”的成员 "means""“exc_type”: is not the member </p>
  
  <p>of“_ts”"</p>
  
  <p>Thank you~</p>