python 串行执行和并行执行

#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:Python27python.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:Python27python.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