tkmru

>>>1,
(1,)
>>>1,2
(1,2)

tkmru

# coding: UTF-8

import re

def extract_text(html):
    #First, I deal with tags.
    cleaned = re.sub(r"<[^>]*?>", "", html)
    cleaned = re.sub(r"(?s)<!--(.*?)-->[\n]?", "", cleaned)
    cleaned = re.sub(r"(?s)<.*?>", "", cleaned)
    #Finally, I deal with special chars.

tkmru

# coding: UTF-8

keys = ['one', 'two', 'three']
values = [1, 2, 3]
dict(zip(keys, values)) #return {'three': 3, 'two': 2, 'one': 1}

tkmru

def convert_time(struct_time): #struct_time to datetime object
    return datetime.datetime(*struct_time[:6])

tkmru

# coding: UTF-8

import sys
import urllib2

def expandURL(shortURL):
    url = urllib2.urlopen(shortURL).geturl()
    return url

tkmru

x, y = y, x

tkmru

# bad case
try:
    do_something() 
    log.debug(u"complete")  # if error raise here, code can't detect error.
except:
    log.debug(u"error") 

# good case
try:
    do_something()

tkmru

>>> dict.fromkeys(['A', 'B', 'C'], True)
{'A': True, 'C': True, 'B': True}
>>> dict.fromkeys(['A', 'B', 'C'])
{'A': None, 'C': None, 'B': None}

tkmru

def group_by(dictionary):
    d = {}
    for k, v in dictionary.iteritems():
        d.setdefault(k, []).append(v)
    return d

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>>> import re
>>> re.__file__
'/usr/lib/python2.7/re.pyc'