import time
def timeit(f):
start_time = time.time()
res = f(*args, **kwargs)
end_time = time.time()
return res
# python3.2版本之後才有的;
import threading
from concurrent.futures import threadpoolexecutor, wait
from urllib.request import urlopen
def get_area(ip):
url = "" % (ip)
urlobj = urlopen(url)
# 服務端返回的頁面資訊, 此處為字串型別
pagecontent = urlobj.read().decode('utf-8')
# 2. 處理json資料
import json
# 解碼: 將json資料格式解碼為python可以識別的物件;
dict_data = json.loads(pagecontent)
print("""
%s所在城市: %s
所在國家: %s
""" % (ip, dict_data['city'], dict_data['country']))
@timeit
def use_ten_thread():
# 1. 例項化線城池物件,線城池裡面包含5個執行緒執行任務;
pool = threadpoolexecutor(max_workers=10)
# futures =
# for i in range(30):
# print("當前執行緒數:", threading.activecount())
# ip = '12.13.14.%s' %(i+1)
# # 往執行緒池裡面扔需要執行的任務, 返回的是乙個物件(_base.future()),
# f1 = pool.submit(get_area, ip)
## # 等待futures裡面所有的子執行緒執行結束, 再執行主線程(join())
# wait(futures)
ips = ['12.13.14.%s' % (ip + 1) for ip in range(30)]
pool.map(get_area, ips)
@timeit
def use_hundred_thread():
# 1. 例項化線城池物件,線城池裡面包含5個執行緒執行任務;
pool = threadpoolexecutor(max_workers=100)
# futures =
# for i in range(30):
# print("當前執行緒數:", threading.activecount())
# ip = '12.13.14.%s' % (i + 1)
# # 往執行緒池裡面扔需要執行的任務, 返回的是乙個物件(_base.future()),
# f1 = pool.submit(get_area, ip)
## wait(futures)
ips = ['12.13.14.%s' % (ip + 1) for ip in range(30)]
pool.map(get_area, ips)
if __name__ == '__main__':
use_ten_thread()
use_hundred_thread()
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