我正在使用MacOS，并且正在尝试安装Web3。我收到了此错误响应消息，我不确定如何解决。
我在Mac中安装了其他代码编辑器，目前我正在学习如何进行区块链开发。如果有人可以为我提供帮助，将会有所帮助。谢谢！
npm WARN deprecated fs-promise@2.0.3: Use mz or fs-extra^3.0 with Promise Support
npm WARN deprecated tar.gz@1.0.7: ⚠️ WARNING ⚠️ tar.gz module has been deprecated and your application is vulnerable. Please use tar module instead: https://npmjs.com/tar
> scrypt@6.0.3 preinstall /Users/HTT/inbox/node_modules/scrypt
> node node-scrypt-preinstall.js
> scrypt@6.0.3 install /Users/HTT/inbox/node_modules/scrypt
> node-gyp rebuild
gyp ERR! configure error
gyp ERR! stack Error: Python executable "/anaconda3/bin/python" is v3.6.4, which is not supported by gyp.
gyp ERR! stack You can pass the --python switch to point to Python >= v2.5.0 & < 3.0.0.
gyp ERR! stack at PythonFinder.failPythonVersion (/usr/local/lib/node_modules/npm/node_modules/node-gyp/lib/configure.js:492:19)
gyp ERR! stack at PythonFinder.<anonymous> (/usr/local/lib/node_modules/npm/node_modules/node-gyp/lib/configure.js:474:14)
gyp ERR! stack at ChildProcess.exithandler (child_process.js:267:7)
gyp ERR! stack at emitTwo (events.js:126:13)
gyp ERR! stack at ChildProcess.emit (events.js:214:7)
gyp ERR! stack at maybeClose (internal/child_process.js:925:16)
gyp ERR! stack at Socket.stream.socket.on (internal/child_process.js:346:11)
gyp ERR! stack at emitOne (events.js:116:13)
gyp ERR! stack at Socket.emit (events.js:211:7)
gyp ERR! stack at Pipe._handle.close [as _onclose] (net.js:567:12)
gyp ERR! System Darwin 17.5.0
gyp ERR! command "/usr/local/bin/node" "/usr/local/lib/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js" "rebuild"
gyp ERR! cwd /Users/HTT/inbox/node_modules/scrypt
gyp ERR! node -v v8.11.1
gyp ERR! node-gyp -v v3.6.2
gyp ERR! not ok
npm WARN inbox@1.0.0 No description
npm WARN inbox@1.0.0 No repository field.
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! scrypt@6.0.3 install: `node-gyp rebuild`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the scrypt@6.0.3 install script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
npm ERR! A complete log of this run can be found in:
npm ERR! /Users/HTT/.npm/_logs/2018-04-26T14_03_17_140Z-debug.log
我通过指定版本修复了它。并不是真正的"修复"，但是使用稳定版本是我可以落后的
npm install -g web3@0.20.6
我还看到这将做技巧
npm install ethereum/web3.js
您可以使用此命令检查Python版本：
python --version
由于您需要使用节点GYP，因此建议安装Python2.7。