使用Python中的多线程测量执行时间

Question

from flask import Flask 
from flask import request 
import threading 
import time 
from pymongo import MongoClient 
import gridfs 
bridgeVideoDatabase = MongoClient().bridgeVideoDatabase 
fs = gridfs.GridFS(bridgeVideoDatabase) 

app = Flask(__name__) 

host = '10.0.0.23' 
port = 8080 

client = MongoClient('mongodb://localhost:27017/') 
db = client.bridgeUserInformationTable 



@app.route('/sendUserStringIntData',methods=['GET', 'POST']) 
def getDataFromAndroid():  
    print "Entire Data:",request.form 
    UserName = request.form['UserName'] 
    print UserName 
    #insertion 
    db.bridgeUsersInfo.insert({"UserName":UserName}) 
    #display in console 
    cursor = db.bridgeUsersInfo.find() 
    for document in cursor: 
     print(document) 
    Thread1 = threading.Thread(target=getDataFromAndroid) 

    t=time.time() 

    Thread1.start() 
    Thread1.join() 
    print'Total time for execution :',time.time()-t,'msec' 
    return "User Info Saved successfully in Database :-)" 


if __name__ == '__main__': 
    app.run(
     host=host, port=port 
     ) 

以上是测量使用python将数据保存到数据库以及从andoid更新输入的时间的脚本。虽然运行相同它是托管，但在保存文本后，它给以下错误

 * Running on http://10.0.0.23:8080/ (Press CTRL+C to quit) 
[2016-11-11 11:52:22,136] ERROR in app: Exception on /sendUserStringIntData [POST] 
Traceback (most recent call last): 
    File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1988, in wsgi_app 
    response = self.full_dispatch_request() 
    File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1641, in full_dispatch_request 
    rv = self.handle_user_exception(e) 
    File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1544, in handle_user_exception 
    reraise(exc_type, exc_value, tb) 
    File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1639, in full_dispatch_request 
    rv = self.dispatch_request() 
    File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1625, in dispatch_request 
    return self.view_functions[rule.endpoint](**req.view_args) 
TypeError: getDataFromAndroid() takes exactly 1 argument (0 given) 
10.0.0.27 - - [11/Nov/2016 11:52:22] "POST /sendUserStringIntData HTTP/1.1" 500 

它应该如何解决？

* Running on http://10.0.0.23:8080/ (Press CTRL+C to quit) 
Entire Data: ImmutableMultiDict([('UserName', u'mahaveer'), ('Age', u'0'), ('Password', u'null')]) 
mahaveer 
{u'UserName': u'mahaveer', u'Age': u'24', u'_id': ObjectId('5825950e0f325f3a30ef7292'), u'Password': u'12345'} 
{u'UserName': u'mahaveer', u'_id': ObjectId('582595530f325f3a563681c7')} 
Entire Data:Exception in thread Thread-1: 
Traceback (most recent call last): 
    File "/usr/lib/python2.7/threading.py", line 810, in __bootstrap_inner 
    self.run() 
    File "/usr/lib/python2.7/threading.py", line 763, in run 
    self.__target(*self.__args, **self.__kwargs) 
    File "/home/cosmitude10/neon/measureMultithread/test.py", line 22, in getDataFromAndroid 
    print "Entire Data:",request.form 
    File "/usr/local/lib/python2.7/dist-packages/werkzeug/local.py", line 343, in __getattr__ 
    return getattr(self._get_current_object(), name) 
    File "/usr/local/lib/python2.7/dist-packages/werkzeug/local.py", line 302, in _get_current_object 
    return self.__local() 
    File "/usr/local/lib/python2.7/dist-packages/flask/globals.py", line 37, in _lookup_req_object 
    raise RuntimeError(_request_ctx_err_msg) 
RuntimeError: Working outside of request context. 

This typically means that you attempted to use functionality that needed 
an active HTTP request. Consult the documentation on testing for 
information about how to avoid this problem. 

Total time for execution : 0.00076699256897 msec 
10.0.0.27 - - [11/Nov/2016 15:24:27] "POST /sendUserStringIntData HTTP/1.1" 200 - 

Answer 1

therading

threading.Thread(group=None, target=None, name=None, args=(), kwargs={}) 

args is the argument tuple for the target invocation. Defaults to()

t_args = (1) 
assert type(t_args) is tuple, "except tuple, get {0}".format(type(t_args)) 
>>> AssertionError: except tuple, get <class 'int'> 

t_args = (request,) 
print type(t_args) 
>>> <class 'tuple'> 

t= threading.Thread(target=getDataFromAndroid, args=t_args) 

元组ARGS =（）/列表ARGS = []
这里也可以使用部分从functools与ARGS

调用

class threading.Timer(interval, function, args=[], kwargs={}) 
threading.Timer(1, partial(your_method, your_arg_a, your_arg_b)).start() 

---

有

This module provides a simple way to time small bits of Python code. It has both a Command-Line Interface as well as a callable one. It avoids a number of common traps for measuring execution times

import timeit 
.... 
start = timeit.default_timer() 
t.start() 
t.join() 
print timit.default_timer - start