#coding:utf-8
import requests,json
from requests.packages.urllib3.exceptions import InsecureRequestWarning
requests.packages.urllib3.disable_warnings(InsecureRequestWarning)

par={'type':'yunda','postid':'3901357983152'}
# data_json=json.dumps(par)
r=requests.get('https://www.kuaidi100.com/query',params=par,verify=False)
content=r.json()
print type(content)

def format_json(content):
    try:
        result = json.dumps(content, sort_keys=True, indent=4, separators=(',', ': ')). \
            encode('latin-1').decode('unicode_escape')
    except:
        result = json.dumps(content, sort_keys=True, indent=4, separators=(',', ': ')). \
            decode("unicode_escape")

    return result

print format_json(content)

其实就是这一句起作用
json.dumps(text, sort_keys=True, indent=4, separators=(',', ': '))