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""" | |
Original question: | |
You have three $20 dollar bills, five $10 dollar bills, two $5 dollar bills, and five $1 dollar bills. | |
How many ways can you make change for a $100 dollar bill? | |
""" | |
def find_ways(num_bills, pos_bills, money): | |
""" | |
DP solution. dp is an array of array of array. In the out-most array, index | |
represents money, and the content is an array of array, which represents |
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import boto3 | |
import requests | |
def obtain_temporary_credentials() -> Tuple[str, str, str]: | |
"""Obtain temporary credentials from AWS IoT device certificate and private key.""" | |
credential_provider_endpoint = 'https://<your_credentials_provider_endpoint>/role-aliases/iot-s3-access-role-alias/credentials' | |
device_cert_path = '<path_to_device_cert>' | |
device_private_key_path = '<path_to_device_private_key>' |
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import requests | |
credential_provider_endpoint = 'https://<your_credentials_provider_endpoint>/role-aliases/iot-s3-access-role-alias/credentials' | |
device_cert_path = '<path_to_device_cert>' | |
device_private_key_path = '<path_to_device_private_key>' | |
resp = requests.get( | |
credential_provider_endpoint, | |
headers={'x-amzn-iot-thingname': 'TestThing'}, | |
cert=(device_cert_path, device_private_key_path), |
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from multiprocessing.queues import Queue | |
import multiprocessing | |
# The following implementation of custom MyQueue to avoid NotImplementedError | |
# when calling queue.qsize() in MacOS X comes almost entirely from this github | |
# discussion: https://github.com/keras-team/autokeras/issues/368 | |
# Necessary modification is made to make the code compatible with Python3. | |
class SharedCounter(object): |
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import re | |
from typing import List | |
""" | |
This scripts accumulates the 'total' column of vnstat output in this format: | |
wlan0 / hourly | |
hour rx | tx | total | avg. rate |
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import logging | |
from logging import handlers | |
from time import sleep | |
def listener_configurer(): | |
root = logging.getLogger() | |
file_handler = handlers.RotatingFileHandler('mptest.log', 'a', 300, 10) | |
console_handler = logging.StreamHandler() | |
formatter = logging.Formatter('%(asctime)s %(processName)-10s %(name)s %(levelname)-8s %(message)s') |
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# logger configuration uncommented in worker_process | |
def worker_process(queue): | |
worker_configurer(queue) | |
for i in range(3): | |
sleep(random()) | |
innerlogger = logging.getLogger('worker') | |
innerlogger.info(f'Logging a random number {randint(0, 10)}') | |
# logger configuration commented out in main |
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# comment out logger configuration for worker process | |
def worker_process(queue): | |
# worker_configurer(queue) | |
for i in range(3): | |
sleep(random()) | |
innerlogger = logging.getLogger('worker') | |
innerlogger.info(f'Logging a random number {randint(0, 10)}') |
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def main(): | |
queue = multiprocessing.Queue(-1) | |
listener = multiprocessing.Process( | |
target=listener_process, args=(queue,)) | |
listener.start() | |
# set up main logger after listener | |
worker_configurer(queue) | |
main_logger = logging.getLogger('main') | |
main_logger.info('Logging from main') |
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def main(): | |
queue = multiprocessing.Queue(-1) | |
# set up main logger following example from work_process | |
worker_configurer(queue) | |
main_logger = logging.getLogger('main') | |
listener = multiprocessing.Process( | |
target=listener_process, args=(queue,)) | |
listener.start() |