python for循环中的多线程

Question

I have a for loop where I am passing list of schema names to the loop. I want to execute these in parallel because there is no relation between these schemas.

I am using Python 2.6.

Creating dictionary here with schema information.

region_by_schema = {}
region_by_schema['UTEST_TT'] = 'tt'
region_by_schema['UTEST_V3'] = 'v3'
region_by_schema['UTEST_WRITE_SERVER'] = ''
region_by_schema['UTEST_PROPERTY'] = ''
region_by_schema['UTEST_PROJECT'] = ''

Looping through schema here:

for base_schema in region_by_schema.keys():
    do_one_user(base_schema, opt_password)

In do_one_user I am creating a directory with base_schema name and I am doing some work there.

So I want to execute these 5 schemas in parallel so that my work will finish fast. I want to put the code below in threads or multiprocessing:

for base_schema in region_by_schema.keys():
    do_one_user(base_schema, opt_password)

Please let me know the approach.

Answer 1

I suggest you read instruction of threading and learn how to use it. Here is link .

from threading import Thread

yourSchemas = [schema1, schema2, schema3]
t = []
def test(region_by_schema):
    for base_schema in region_by_schema.keys():
        do_one_user(base_schema, opt_password)

    for schema in yourSchemas:
        t.append(Thread(target=test, args=[schema]))

    for i in range(len(yourSchemas)):
        t.start()
        t.join()