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這篇文章主要講解了python串行執行和并行執行的方法,內容清晰明了,對此有興趣的小伙伴可以學習一下,相信大家閱讀完之后會有幫助。
我就廢話不多說了,大家還是直接看代碼吧!
#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 這個時候是串行 花費了15秒 多線程跑: #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 此時花了 8秒
補充知識:python logging定制logstash的json日志格式
最近一直在折騰日志的收集,現在算是收尾了。 寫一篇算python優化logstash的方案。
其實大家都知道logstash調用grok來解析日志的話,是要消耗cpu的成本的,畢竟是需要正則的匹配的。
根據logstash調優的方案,咱們可以預先生成json的格式。 我這邊基本是python的程序,怎么搞尼 ?
有兩種方法,第一種方法是生成json后,直接打入logstash的端口。 還有一種是生成json寫入文件,讓logstash做tail操作的時候,把一行的日志數據直接載入json就可以了。
python下的日志調試用得時logging,改成json也是很好改得。 另外不少老外已經考慮到這樣的需求,已經做了python logstash的模塊。
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自帶了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')
不管怎么說,最后生成的格式是這樣就可以了。
{ "@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" }
看完上述內容,是不是對python串行執行和并行執行的方法有進一步的了解,如果還想學習更多內容,歡迎關注億速云行業資訊頻道。
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