如何使用Python(2.7)从URL获取变量？

import urllib2

url = "http://example.com/api?variable=value"

response = urllib2.urlopen(url)
data = response.read()

import json

parsed_data = json.loads(data)

variable_value = parsed_data["variable"]

import urllib2
import json

url = "http://example.com/api?variable=value"
response = urllib2.urlopen(url)
data = response.read()

parsed_data = json.loads(data)
variable_value = parsed_data["variable"]

print(variable_value)