python version 3.6 required,which was not fount in the registry（python3.6安装scrapy）

在安装scrapy时遇到问题

环境：win10(64位）， Python3.6（64位）

安装scrapy：

1、安装wheel（安装后，便支持通过wheel文件安装软件）

pip3 install wheel

2、安装lxml、pyopenssl

lxml：解析XML的库，很强大，做爬虫BS4,selenium,XPATH都会用到

pip3 install lxml
pip3 install pyopenssl

3、安装pywin32

下载网址： https://sourceforge.net/projects/pywin32/files/pywin32/

根据自己python版本下载64位或32位（(注意：pywin32版本跟随Python版本，即如果win是64位，但python是32位，pywin32要装32位的，与win无关））

双击安装（可能会遇到下列错误是注册表问题）

安装第三方库出现Python version 3.6 required, which was not found in the registry错误解决

建立一个文件 register.py 内容如下. 然后执行该脚本.

import sys

from winreg import *

# tweak as necessary
version = sys.version[:3]
installpath = sys.prefix

regpath = "SOFTWARE\\Python\\Pythoncore\\%s\\" % (version)
installkey = "InstallPath"
pythonkey = "PythonPath"
pythonpath = "%s;%s\\Lib\\;%s\\DLLs\\" % (
    installpath, installpath, installpath
)

def RegisterPy():
    try:
        reg = OpenKey(HKEY_CURRENT_USER, regpath)
    except EnvironmentError as e:
        try:
            reg = CreateKey(HKEY_CURRENT_USER, regpath)
            SetValue(reg, installkey, REG_SZ, installpath)
            SetValue(reg, pythonkey, REG_SZ, pythonpath)
            CloseKey(reg)
        except:
            print("*** Unable to register!")
            return
        print("--- Python", version, "is now registered!")
        return
    if (QueryValue(reg, installkey) == installpath and
                QueryValue(reg, pythonkey) == pythonpath):
        CloseKey(reg)
        print("=== Python", version, "is already registered!")
        return
    CloseKey(reg)
    print("*** Unable to register!")
    print("*** You probably have another Python installation!")

if __name__ == "__main__":
    RegisterPy()

4、下载twisted

下载twisted的wheel文件：http://www.lfd.uci.edu/~gohlke/pythonlibs/

pip3 install 下载目录\Twisted-17.9.0-cp36-cp36m-win_amd64.whl

安装可能会报错

error: Microsoft Visual C++ 14.0 is required. Get it with "Microsoft Visual C++ Build Tools": http://landinghub.visualstudio.com/visual-cpp-build-tools

说明电脑需要安装visual C++ Build Tools 2015

5、安装scrapy

pip3 install scrapy

6、大功告成

这是今天安装scrapy时遇到的问题 明天会发一篇关于scrapy的详细随笔有兴趣的可以关注