module

requests

Elegant and simple HTTP module.

BeautifulSoup

Very useful HTML/XML parser.

json

JSON codec.

Application examples:

• Format JSON file

  python -m json.tool src.json > dst.json
  

  Format JSON in Vim:

  :%!python -m json.tool
  

CGIHTTPServer

Simple and practical HTTP server.

Application examples:

• Run a simple HTTP server

  python -m CGIHTTPServer 80
  

base64

A module for convenient base64 encoding and decoding.

Application examples:

• decode base64

  echo aGVsbG93b3JsZA== | python -m base64 -d
  

  you can see the output

  helloworld
  

problem solved

Your PYTHONPATH points to a site-packages dir

Error message:

~/github/hs-airdrop $ npm install

bcrypto@5.0.3 install /Users/username/github/hs-airdrop/node_modules/bcrypto node-gyp rebuild

Your PYTHONPATH points to a site-packages dir for Python 3.x but you are running Python 2.x! PYTHONPATH is currently: “/usr/local/lib/node_modules/npm/node_modules/node-gyp/gyp/pylib” You should unset PYTHONPATH to fix this. gyp ERR! configure error gyp ERR! stack Error: gyp failed with exit code: 1 gyp ERR! stack at ChildProcess.onCpExit (/usr/local/lib/node_modules/npm/node_modules/node-gyp/lib/configure.js:351:16) gyp ERR! stack at ChildProcess.emit (events.js:210:5) gyp ERR! stack at Process.ChildProcess._handle.onexit (internal/child_process.js:272:12) gyp ERR! System Darwin 19.3.0 gyp ERR! command “/usr/local/Cellar/node/12.12.0/bin/node” “/usr/local/lib/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js” “rebuild “ gyp ERR! cwd /Users/username/github/hs-airdrop/node_modules/bcrypto gyp ERR! node -v v12.12.0 gyp ERR! node-gyp -v v5.0.5 gyp ERR! not ok npm ERR! code ELIFECYCLE npm ERR! errno 1 npm ERR! bcrypto@5.0.3 install: node-gyp rebuild npm ERR! Exit status 1 npm ERR! npm ERR! Failed at the bcrypto@5.0.3 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/username/.npm/_logs/2020-02-19T14_14_34_524Z-debug.log ````

Solution:

Delete sitecustomize.pyc in the /usr/local/lib/python3.7/site-packages/ folder, rename the sitecustomize.py file to sitecustomize.py~, and change it back after the installation is successful.