>>> r = requests.get('http://httpbin.org/get')
>>> print r.text
{
 "args": {}, 
 "headers": {
  "Accept": "*/*", 
  "Accept-Encoding": "gzip, deflate", 
  "Connection": "close", 
  "Host": "httpbin.org", 
  "User-Agent": "python-requests/2.3.0 CPython/2.6.6 Windows/7", 
  "X-Request-Id": "8a28bbea-55cd-460b-bda3-f3427d66b700"
 }, 
 "origin": "124.192.129.84", 
 "url": "http://httpbin.org/get"
}

 >>> import requests
>>> pqyload = {'q':'杨彦星'}
>>> r = requests.get('http://www.so.com/s',params = pqyload)
>>> r.url
u'http://www.so.com/s?q=%E6%9D%A8%E5%BD%A6%E6%98%9F'

 >>> payload = {'a':'杨','b':'hello'}
>>> r = requests.post("http://httpbin.org/post", data=payload)
>>> print r.text
{
 "args": {}, 
 "data": "", 
 "files": {}, 
 "form": {
  "a": "\u6768", 
  "b": "hello"
 }, 
 "headers": {
  "Accept": "*/*", 
  "Accept-Encoding": "gzip, deflate", 
  "Connection": "close", 
  "Content-Length": "19", 
  "Content-Type": "application/x-www-form-urlencoded", 
  "Host": "httpbin.org", 
  "User-Agent": "python-requests/2.3.0 CPython/2.6.6 Windows/7", 
  "X-Request-Id": "c81cb937-04b8-4a2d-ba32-04b5c0b3ba98"
 }, 
 "json": null, 
 "origin": "124.192.129.84", 
 "url": "http://httpbin.org/post"
}
>>>

>>> payload = {'a':'杨','b':'hello'}
>>> import json
>>> r = requests.post('http://httpbin.org/post', data=json.dumps(payload))

>>> url = 'http://httpbin.org/post'
>>> files = {'file': open('touxiang.png', 'rb')}
>>> r = requests.post(url, files=files)

>>> import json
>>> url = 'https://api.github.com/some/endpoint'
>>> payload = {'some': 'data'}
>>> headers = {'content-type': 'application/json'}
>>> r = requests.post(url, data=json.dumps(payload), headers=headers)

r = requests.get('http://httpbin.org/get')
print r.status_code

>>> print r.headers
{'content-length': '519', 'server': 'gunicorn/18.0', 'connection': 'keep-alive', 'date': 'Sun, 15 Jun 2014 14:19:52 GMT', 'access-control-allow-origin': '*', 'content-type': 'application/json'}

r.headers[‘Content-Type']
r.headers.get(‘Content-Type')

r.text
r.content

>>> r = requests.get('http://www.baidu.com')
>>> r.cookies['BAIDUID']
'D5810267346AEFB0F25CB0D6D0E043E6:FG=1'

>>> url = 'http://httpbin.org/cookies'
>>> cookies = {'cookies_are':'working'}
>>> r = requests.get(url,cookies = cookies)
>>> 
>>> print r.text
{
 "cookies": {
  "cookies_are": "working"
 }
}
>>>

>>> requests.get('http://github.com', timeout=1) 
<Response [200]>

requests.get('http://github.com', timeout=0.001)

s = requests.Session() 

 #coding:utf-8
import requests
import re
url = r'http://www.renren.com/ajaxLogin'
user = {'email':'email','password':'pass'}
s = requests.Session()
r = s.post(url,data = user)
html = r.text
visit = []
first = re.compile(r'</span><span class="time-tip first-tip"><span class="tip-content">(.*?)</span>')
second = re.compile(r'</span><span class="time-tip"><span class="tip-content">(.*?)</span>')
third = re.compile(r'</span><span class="time-tip last-second-tip"><span class="tip-content">(.*?)</span>')
last = re.compile(r'</span><span class="time-tip last-tip"><span class="tip-content">(.*?)</span>')
visit.extend(first.findall(html))
visit.extend(second.findall(html))
visit.extend(third.findall(html))
visit.extend(last.findall(html))
for i in visit:
  print i
print '以下是更多的最近来访'
vm = s.get('http://www.renren.com/myfoot.do')
fm = re.compile(r'"name":"(.*?)"')
visitmore = fm.findall(vm.text)
for i in visitmore:
  print i

import requests
url = 'http://httpbin.org/cookies'
cookies = dict(cookies_are='working')

r = requests.get(url, cookies=cookies)
r.text
#'{"cookies": {"cookies_are": "working"}}'

url = 'http://example.com/some/cookie/setting/url'
r = requests.get(url)

r.cookies['example_cookie_name']
# 'example_cookie_value'

def browsercookiesdict(s):
 '''Covert cookies string from browser to a dict'''
 ss=s.split(';')
 outdict={}
 for item in ss:
 i1=item.split('=',1)[0].strip()
 i2=item.split('=',1)[1].strip()
 outdict[i1]=i2
 return outdict