提高你的Python编码效率

>>> some_list = [1, 2, 3, 4, 5]>>> another_list = [ x + 1 for x in some_list ]>>> another_list[2, 3, 4, 5, 6]

>>> # Set Comprehensions>>> some_list = [1, 2, 3, 4, 5, 2, 5, 1, 4, 8]>>> even_set = { x for x in some_list if x % 2 == 0 }>>> even_setset([8, 2, 4])
>>> # Dict Comprehensions>>> d = { x: x % 2 == 0 for x in range(1, 11) }>>> d{1: False, 2: True, 3: False, 4: True, 5: False, 6: True, 7: False, 8: True, 9: False, 10: True}

>>> my_set = {1, 2, 1, 2, 3, 4}>>> my_setset([1, 2, 3, 4])

>>> from collections import Counter>>> c = Counter('hello world')>>> cCounter({'l': 3, 'o': 2, ' ': 1, 'e': 1, 'd': 1, 'h': 1, 'r': 1, 'w': 1})>>> c.most_common(2)[('l', 3), ('o', 2)]

>>> import json>>> print(json.dumps(data))  # No indention{"status": "OK", "count": 2, "results": [{"age": 27, "name": "Oz", "lactose_intolerant": true}, {"age": 29, "name": "Joe", "lactose_intolerant": false}]}>>> print(json.dumps(data, indent=2))  # With indention{  "status": "OK",  "count": 2,  "results": [    {      "age": 27,      "name": "Oz",      "lactose_intolerant": true    },    {      "age": 29,      "name": "Joe",      "lactose_intolerant": false    }  ]}

from SimpleXMLRPCServer import SimpleXMLRPCServer
def file_reader(file_name):    with open(file_name, 'r') as f:        return f.read()
server = SimpleXMLRPCServer(('localhost', 8000))server.register_introspection_functions()
server.register_function(file_reader)
server.serve_forever()

import xmlrpclibproxy = xmlrpclib.ServerProxy('http://localhost:8000/')proxy.file_reader('/tmp/secret.txt')

python -m SimpleHTTPServer

echo '{"json":"obj"}' | python -mjson.tool

echo '{"json":"obj"}' | python -mjson.tool | pygmentize -l json