mac os 下安装python与Scrapy
安装setuotool执行该命令 curl https://bootstrap.pypa.io/ez_setup.py -o - | python
mac OS 自带python 2.7.6 从官网下载2.7.9安装后，在终端输入python 自动改变为2.7.9版本，且自带pip
执行pip install scrapy
报错Perhaps your account does not have write access to this directory? 加上sudo
执行sudo pip install scrapy
仍然报错
打开终端 执行 xcode-select --install
安装成功
执行
scrapy startproject demo1
报错 No module named twisted.internet
在Stack Overflow 找到
f you use pip just try:
pip install twisted
The same works with w3lib and lxml.
执 行 pip install twisted
再次执行scrapy startproject demo1
报错 No module named w3lib.http
执 行 pip install w3lib
再次执行scrapy startproject demo1
成功
运行项目时报错
No module named cryptography.hazmat.bindings.openssl.binding
执行pip install crpytography
成功
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