python 串行执行和并行执行实例

我就废话不多说了,大家还是直接看代码吧!

#coding=utf-8

import threading

import time

import cx_Oracle

from pprint import pprint

import csv

print time.asctime()

table_name = "dbtest.csv"

f = open(table_name + ".csv", "w")

conn = cx_Oracle.connect('tlcbuser/tlcbuser@20.5.101.31/tlyy')

cursor = conn.cursor()

def query01():

tname = threading.current_thread()

aa=10

# cursor.execute("SELECT * FROM TEST100 WHERE ID = %s", [aa])

cursor.prepare("""SELECT * FROM TEST100 WHERE ID=:id""")

cursor.execute(None,{'id':aa})

row = cursor.fetchall()

print row

return row

cursor.close()

def query02():

tname = threading.current_thread()

aa=20

# cursor.execute("SELECT * FROM TEST100 WHERE ID = %s", [aa])

cursor.prepare("""SELECT * FROM TEST100 WHERE ID=:id""")

cursor.execute(None,{'id':aa})

row = cursor.fetchall()

print row

return row

cursor.close()

def query03():

tname = threading.current_thread()

aa=30

# cursor.execute("SELECT * FROM TEST100 WHERE ID = %s", [aa])

cursor.prepare("""SELECT * FROM TEST100 WHERE ID=:id""")

cursor.execute(None,{'id':aa})

row = cursor.fetchall()

print row

return row

cursor.close()

def query04():

tname = threading.current_thread()

aa=40

# cursor.execute("SELECT * FROM TEST100 WHERE ID = %s", [aa])

cursor.prepare("""SELECT * FROM TEST100 WHERE ID=:id""")

cursor.execute(None,{'id':aa})

row = cursor.fetchall()

print row

return row

def query05():

tname = threading.current_thread()

aa=50

# cursor.execute("SELECT * FROM TEST100 WHERE ID = %s", [aa])

cursor.prepare("""SELECT * FROM TEST100 WHERE ID=:id""")

cursor.execute(None,{'id':aa})

row = cursor.fetchall()

print row

return row

cursor.close()

def query06():

tname = threading.current_thread()

aa=60

# cursor.execute("SELECT * FROM TEST100 WHERE ID = %s", [aa])

cursor.prepare("""SELECT * FROM TEST100 WHERE ID=:id""")

cursor.execute(None,{'id':aa})

row = cursor.fetchall()

print row

return row

cursor.close()

def query07():

tname = threading.current_thread()

aa=70

# cursor.execute("SELECT * FROM TEST100 WHERE ID = %s", [aa])

cursor.prepare("""SELECT * FROM TEST100 WHERE ID=:id""")

cursor.execute(None,{'id':aa})

row = cursor.fetchall()

return row

cursor.close()

def query08():

tname = threading.current_thread()

aa=80

# cursor.execute("SELECT * FROM TEST100 WHERE ID = %s", [aa])

cursor.prepare("""SELECT * FROM TEST100 WHERE ID=:id""")

cursor.execute(None,{'id':aa})

row = cursor.fetchall()

print row

return row

cursor.close()

def query09():

tname = threading.current_thread()

aa=90

# cursor.execute("SELECT * FROM TEST100 WHERE ID = %s", [aa])

cursor.prepare("""SELECT * FROM TEST100 WHERE ID=:id""")

cursor.execute(None,{'id':aa})

row = cursor.fetchall()

print row

return row

cursor.close()

def query10():

tname = threading.current_thread()

aa=100

# cursor.execute("SELECT * FROM TEST100 WHERE ID = %s", [aa])

cursor.prepare("""SELECT * FROM TEST100 WHERE ID=:id""")

cursor.execute(None,{'id':aa})

row = cursor.fetchall()

print row

return row

cursor.close()

threads = []

t1 = threading.Thread(target=query01, name='query01')

threads.append(t1)

t2 = threading.Thread(target=query02, name='query02')

threads.append(t2)

t2 = threading.Thread(target=query03, name='query03')

threads.append(t2)

t2 = threading.Thread(target=query04, name='query04')

threads.append(t2)

t2 = threading.Thread(target=query05, name='query05')

threads.append(t2)

t2 = threading.Thread(target=query06, name='query06')

threads.append(t2)

t2 = threading.Thread(target=query07, name='query07')

threads.append(t2)

t2 = threading.Thread(target=query08, name='query08')

threads.append(t2)

t2 = threading.Thread(target=query09, name='query09')

threads.append(t2)

t2 = threading.Thread(target=query10, name='query10')

threads.append(t2)

if __name__ == '__main__':

for t in threads:

# t.setDaemon(True)

t.start()

# t.run()

# t.start()

# print '3333333'

print threading.current_thread()

# print t.is_alive()

# print '3333333'

t.join()

print "all over "

print time.asctime()

C:\Python27\python.exe C:/Users/tlcb/PycharmProjects/untitled/a2.py

Wed Mar 28 11:08:19 2018

<_MainThread(MainThread, started 18744)>

[(10, '10boobook10', '10aaaaaaaaaaaa10', '10bbbbbbbbbbbbbbbbb10'), (10, '10sssssssss10', 'tlcb', 'tlcb'), (10, '10boobook10', '10aaaaaaaaaaaa10', '10bbbbbbbbbbbbbbbbb10')]

<_MainThread(MainThread, started 18744)>

[(20, '20boobook20', '20aaaaaaaaaaaa20', '20bbbbbbbbbbbbbbbbb20'), (20, '20boobook20', '20aaaaaaaaaaaa20', '20bbbbbbbbbbbbbbbbb20'), (20, '20boobook20', '20aaaaaaaaaaaa20', '20bbbbbbbbbbbbbbbbb20')]

<_MainThread(MainThread, started 18744)>

[(30, '30boobook30', '30aaaaaaaaaaaa30', '30bbbbbbbbbbbbbbbbb30'), (30, '30boobook30', '30aaaaaaaaaaaa30', '30bbbbbbbbbbbbbbbbb30'), (30, '30boobook30', '30aaaaaaaaaaaa30', '30bbbbbbbbbbbbbbbbb30')]

<_MainThread(MainThread, started 18744)>

[(40, '40boobook40', '40aaaaaaaaaaaa40', '40bbbbbbbbbbbbbbbbb40'), (40, '40boobook40', '40aaaaaaaaaaaa40', '40bbbbbbbbbbbbbbbbb40'), (40, '40boobook40', '40aaaaaaaaaaaa40', '40bbbbbbbbbbbbbbbbb40')]

<_MainThread(MainThread, started 18744)>

[(50, '50boobook50', '50aaaaaaaaaaaa50', '50bbbbbbbbbbbbbbbbb50'), (50, '50boobook50', '50aaaaaaaaaaaa50', '50bbbbbbbbbbbbbbbbb50'), (50, '50boobook50', '50aaaaaaaaaaaa50', '50bbbbbbbbbbbbbbbbb50')]

<_MainThread(MainThread, started 18744)>

[(60, '60boobook60', '60aaaaaaaaaaaa60', '60bbbbbbbbbbbbbbbbb60'), (60, '60boobook60', '60aaaaaaaaaaaa60', '60bbbbbbbbbbbbbbbbb60'), (60, '60boobook60', '60aaaaaaaaaaaa60', '60bbbbbbbbbbbbbbbbb60')]

<_MainThread(MainThread, started 18744)>

<_MainThread(MainThread, started 18744)>

[(80, '80boobook80', '80aaaaaaaaaaaa80', '80bbbbbbbbbbbbbbbbb80'), (80, '80boobook80', '80aaaaaaaaaaaa80', '80bbbbbbbbbbbbbbbbb80'), (80, '80boobook80', '80aaaaaaaaaaaa80', '80bbbbbbbbbbbbbbbbb80')]

<_MainThread(MainThread, started 18744)>

[(90, '90boobook90', '90aaaaaaaaaaaa90', '90bbbbbbbbbbbbbbbbb90'), (90, '90boobook90', '90aaaaaaaaaaaa90', '90bbbbbbbbbbbbbbbbb90'), (90, '90boobook90', '90aaaaaaaaaaaa90', '90bbbbbbbbbbbbbbbbb90')]

<_MainThread(MainThread, started 18744)>

[(100, '100boobook100', '100aaaaaaaaaaaa100', '100bbbbbbbbbbbbbbbbb100'), (100, '100boobook100', '100aaaaaaaaaaaa100', '100bbbbbbbbbbbbbbbbb100'), (100, '100boobook100', '100aaaaaaaaaaaa100', '100bbbbbbbbbbbbbbbbb100')]

all over

Wed Mar 28 11:08:34 2018

Process finished with exit code 0

这个时候是串行 花费了15秒

多线程跑:

#coding=utf-8

import threading

import time

import cx_Oracle

from pprint import pprint

import csv

print time.asctime()

table_name = "dbtest.csv"

f = open(table_name + ".csv", "w")

def query01():

tname = threading.current_thread()

aa=10

conn = cx_Oracle.connect('tlcbuser/tlcbuser@20.5.101.31/tlyy')

cursor = conn.cursor()

# cursor.execute("SELECT * FROM TEST100 WHERE ID = %s", [aa])

cursor.prepare("""SELECT * FROM TEST100 WHERE ID=:id""")

cursor.execute(None,{'id':aa})

row = cursor.fetchall()

print row

return row

cursor.close()

conn.close()

def query02():

tname = threading.current_thread()

aa=20

conn = cx_Oracle.connect('tlcbuser/tlcbuser@20.5.101.31/tlyy')

cursor = conn.cursor()

# cursor.execute("SELECT * FROM TEST100 WHERE ID = %s", [aa])

cursor.prepare("""SELECT * FROM TEST100 WHERE ID=:id""")

cursor.execute(None,{'id':aa})

row = cursor.fetchall()

print row

return row

cursor.close()

conn.close()

def query03():

tname = threading.current_thread()

aa=30

conn = cx_Oracle.connect('tlcbuser/tlcbuser@20.5.101.31/tlyy')

cursor = conn.cursor()

# cursor.execute("SELECT * FROM TEST100 WHERE ID = %s", [aa])

cursor.prepare("""SELECT * FROM TEST100 WHERE ID=:id""")

cursor.execute(None,{'id':aa})

row = cursor.fetchall()

print row

return row

cursor.close()

conn.close()

def query04():

conn = cx_Oracle.connect('tlcbuser/tlcbuser@20.5.101.31/tlyy')

cursor = conn.cursor()

tname = threading.current_thread()

aa=40

# cursor.execute("SELECT * FROM TEST100 WHERE ID = %s", [aa])

cursor.prepare("""SELECT * FROM TEST100 WHERE ID=:id""")

cursor.execute(None,{'id':aa})

row = cursor.fetchall()

print row

return row

cursor.close()

conn.close()

def query05():

conn = cx_Oracle.connect('tlcbuser/tlcbuser@20.5.101.31/tlyy')

cursor = conn.cursor()

tname = threading.current_thread()

aa=50

# cursor.execute("SELECT * FROM TEST100 WHERE ID = %s", [aa])

cursor.prepare("""SELECT * FROM TEST100 WHERE ID=:id""")

cursor.execute(None,{'id':aa})

row = cursor.fetchall()

print row

return row

cursor.close()

conn.close()

def query06():

conn = cx_Oracle.connect('tlcbuser/tlcbuser@20.5.101.31/tlyy')

cursor = conn.cursor()

tname = threading.current_thread()

aa=60

# cursor.execute("SELECT * FROM TEST100 WHERE ID = %s", [aa])

cursor.prepare("""SELECT * FROM TEST100 WHERE ID=:id""")

cursor.execute(None,{'id':aa})

row = cursor.fetchall()

print row

return row

cursor.close()

conn.close()

def query07():

conn = cx_Oracle.connect('tlcbuser/tlcbuser@20.5.101.31/tlyy')

cursor = conn.cursor()

tname = threading.current_thread()

aa=70

# cursor.execute("SELECT * FROM TEST100 WHERE ID = %s", [aa])

cursor.prepare("""SELECT * FROM TEST100 WHERE ID=:id""")

cursor.execute(None,{'id':aa})

row = cursor.fetchall()

return row

cursor.close()

conn.close()

def query08():

conn = cx_Oracle.connect('tlcbuser/tlcbuser@20.5.101.31/tlyy')

cursor = conn.cursor()

tname = threading.current_thread()

aa=80

# cursor.execute("SELECT * FROM TEST100 WHERE ID = %s", [aa])

cursor.prepare("""SELECT * FROM TEST100 WHERE ID=:id""")

cursor.execute(None,{'id':aa})

row = cursor.fetchall()

print row

return row

cursor.close()

conn.close()

def query09():

conn = cx_Oracle.connect('tlcbuser/tlcbuser@20.5.101.31/tlyy')

cursor = conn.cursor()

tname = threading.current_thread()

aa=90

# cursor.execute("SELECT * FROM TEST100 WHERE ID = %s", [aa])

cursor.prepare("""SELECT * FROM TEST100 WHERE ID=:id""")

cursor.execute(None,{'id':aa})

row = cursor.fetchall()

print row

return row

cursor.close()

conn.close()

def query10():

conn = cx_Oracle.connect('tlcbuser/tlcbuser@20.5.101.31/tlyy')

cursor = conn.cursor()

tname = threading.current_thread()

aa=100

# cursor.execute("SELECT * FROM TEST100 WHERE ID = %s", [aa])

cursor.prepare("""SELECT * FROM TEST100 WHERE ID=:id""")

cursor.execute(None,{'id':aa})

row = cursor.fetchall()

print row

return row

cursor.close()

conn.close()

threads = []

t1 = threading.Thread(target=query01, name='query01')

threads.append(t1)

t2 = threading.Thread(target=query02, name='query02')

threads.append(t2)

t2 = threading.Thread(target=query03, name='query03')

threads.append(t2)

t2 = threading.Thread(target=query04, name='query04')

threads.append(t2)

t2 = threading.Thread(target=query05, name='query05')

threads.append(t2)

t2 = threading.Thread(target=query06, name='query06')

threads.append(t2)

t2 = threading.Thread(target=query07, name='query07')

threads.append(t2)

t2 = threading.Thread(target=query08, name='query08')

threads.append(t2)

t2 = threading.Thread(target=query09, name='query09')

threads.append(t2)

t2 = threading.Thread(target=query10, name='query10')

threads.append(t2)

if __name__ == '__main__':

for t in threads:

# t.setDaemon(True)

t.start()

# t.run()

# t.start()

# print '3333333'

print threading.current_thread()

# print t.is_alive()

# print '3333333'

t.join()

print "all over "

print time.asctime()

C:\Python27\python.exe C:/Users/tlcb/PycharmProjects/untitled/a2.py

Wed Mar 28 11:12:47 2018

<_MainThread(MainThread, started 22500)>

<_MainThread(MainThread, started 22500)>

<_MainThread(MainThread, started 22500)>

<_MainThread(MainThread, started 22500)>

<_MainThread(MainThread, started 22500)>

<_MainThread(MainThread, started 22500)>

<_MainThread(MainThread, started 22500)>

<_MainThread(MainThread, started 22500)>

<_MainThread(MainThread, started 22500)>

<_MainThread(MainThread, started 22500)>

[(40, '40boobook40', '40aaaaaaaaaaaa40', '40bbbbbbbbbbbbbbbbb40'), (40, '40boobook40', '40aaaaaaaaaaaa40', '40bbbbbbbbbbbbbbbbb40'), (40, '40boobook40', '40aaaaaaaaaaaa40', '40bbbbbbbbbbbbbbbbb40')]

[(60, '60boobook60', '60aaaaaaaaaaaa60', '60bbbbbbbbbbbbbbbbb60'), (60, '60boobook60', '60aaaaaaaaaaaa60', '60bbbbbbbbbbbbbbbbb60'), (60, '60boobook60', '60aaaaaaaaaaaa60', '60bbbbbbbbbbbbbbbbb60')]

[(80, '80boobook80', '80aaaaaaaaaaaa80', '80bbbbbbbbbbbbbbbbb80'), (80, '80boobook80', '80aaaaaaaaaaaa80', '80bbbbbbbbbbbbbbbbb80'), (80, '80boobook80', '80aaaaaaaaaaaa80', '80bbbbbbbbbbbbbbbbb80')]

[(50, '50boobook50', '50aaaaaaaaaaaa50', '50bbbbbbbbbbbbbbbbb50'), (50, '50boobook50', '50aaaaaaaaaaaa50', '50bbbbbbbbbbbbbbbbb50'), (50, '50boobook50', '50aaaaaaaaaaaa50', '50bbbbbbbbbbbbbbbbb50')]

[(10, '10boobook10', '10aaaaaaaaaaaa10', '10bbbbbbbbbbbbbbbbb10'), (10, '10sssssssss10', 'tlcb', 'tlcb'), (10, '10boobook10', '10aaaaaaaaaaaa10', '10bbbbbbbbbbbbbbbbb10')]

[(20, '20boobook20', '20aaaaaaaaaaaa20', '20bbbbbbbbbbbbbbbbb20'), (20, '20boobook20', '20aaaaaaaaaaaa20', '20bbbbbbbbbbbbbbbbb20'), (20, '20boobook20', '20aaaaaaaaaaaa20', '20bbbbbbbbbbbbbbbbb20')]

[(30, '30boobook30', '30aaaaaaaaaaaa30', '30bbbbbbbbbbbbbbbbb30'), (30, '30boobook30', '30aaaaaaaaaaaa30', '30bbbbbbbbbbbbbbbbb30'), (30, '30boobook30', '30aaaaaaaaaaaa30', '30bbbbbbbbbbbbbbbbb30')]

[(100, '100boobook100', '100aaaaaaaaaaaa100', '100bbbbbbbbbbbbbbbbb100'), (100, '100boobook100', '100aaaaaaaaaaaa100', '100bbbbbbbbbbbbbbbbb100'), (100, '100boobook100', '100aaaaaaaaaaaa100', '100bbbbbbbbbbbbbbbbb100')]

[(90, '90boobook90', '90aaaaaaaaaaaa90', '90bbbbbbbbbbbbbbbbb90'), (90, '90boobook90', '90aaaaaaaaaaaa90', '90bbbbbbbbbbbbbbbbb90'), (90, '90boobook90', '90aaaaaaaaaaaa90', '90bbbbbbbbbbbbbbbbb90')]

all over

Wed Mar 28 11:12:55 2018

Process finished with exit code 0

此时花了 8秒

补充知识:python logging定制logstash的json日志格式

最近一直在折腾日志的收集,现在算是收尾了。 写一篇算python优化logstash的方案。

其实大家都知道logstash调用grok来解析日志的话,是要消耗cpu的成本的,毕竟是需要正则的匹配的。

根据logstash调优的方案,咱们可以预先生成json的格式。 我这边基本是python的程序,怎么搞尼 ?

有两种方法,第一种方法是生成json后,直接打入logstash的端口。 还有一种是生成json写入文件,让logstash做tail操作的时候,把一行的日志数据直接载入json就可以了。

python下的日志调试用得时logging,改成json也是很好改得。 另外不少老外已经考虑到这样的需求,已经做了python logstash的模块。

import logging

import logstash

import sys

host = 'localhost'

test_logger = logging.getLogger('python-logstash-logger')

test_logger.setLevel(logging.INFO)

test_logger.addHandler(logstash.LogstashHandler(host, 5959, version=1))

# test_logger.addHandler(logstash.TCPLogstashHandler(host, 5959, version=1))

test_logger.error('python-logstash: test logstash error message.')

test_logger.info('python-logstash: test logstash info message.')

test_logger.warning('python-logstash: test logstash warning message.')

# add extra field to logstash message

extra = {

'test_string': 'python version: ' + repr(sys.version_info),

'test_boolean': True,

'test_dict': {'a': 1, 'b': 'c'},

'test_float': 1.23,

'test_integer': 123,

'test_list': [1, 2, '3'],

}

test_logger.info('python-logstash: test extra fields', extra=extra)

python-logstash自带了amqp的方案

import logging

import logstash

# AMQP parameters

host = 'localhost'

username = 'guest'

password= 'guest'

exchange = 'logstash.py'

# get a logger and set logging level

test_logger = logging.getLogger('python-logstash-logger')

test_logger.setLevel(logging.INFO)

# add the handler

test_logger.addHandler(logstash.AMQPLogstashHandler(version=1,

host=host,

durable=True,

username=username,

password=password,

exchange=exchange))

# log

test_logger.error('python-logstash: test logstash error message.')

test_logger.info('python-logstash: test logstash info message.')

test_logger.warning('python-logstash: test logstash warning message.')

try:

1/0

except:

test_logger.exception('python-logstash: test logstash exception with stack trace')

不管怎么说,最后生成的格式是这样就可以了。

{

"@source"=>"unknown",

"@type"=>"nginx",

"@tags"=>[],

"@fields"=>{

"remote_addr"=>"192.168.0.1",

"remote_user"=>"-",

"body_bytes_sent"=>"13988",

"request_time"=>"0.122",

"status"=>"200",

"request"=>"GET /some/url HTTP/1.1",

"request_method"=>"GET",

"http_referrer"=>"http://www.example.org/some/url",

"http_user_agent"=>"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.1 (KHTML, like Gecko) Chrome/21.0.1180.79 Safari/537.1"

},

"@timestamp"=>"2012-08-23T10:49:14+02:00"

}

我这里简单提一下,这个模块用的不是很满意,我在python下把日志打成了json字符串,我原本以为会像grok那样,在Es里面,我的这条日志是个字段的结构,而不是这个日志都在message里面…. 我想大家应该明白了我的意思,这样很是不容易在kibana的搜索…

在kibana搜索,我经常上 source:xxx AND level:INFO 结果正像上面描述的那样,整条日志,都在@message里面。

以上这篇python 串行执行和并行执行实例就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持。

以上是 python 串行执行和并行执行实例 的全部内容, 来源链接: utcz.com/z/360416.html

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