파이썬 필요한 패키지들 설명

import urllib.request

#Extensible library for opening URLs

import urllib.parse

#Parse URLs into components
import xlsxwriter

#Writing files in the Excel 2007+ XLSX file format.

import os

#Miscellaneous operating system interfaces 
import time

#Time access and conversions
import sys

#System-specific parameters and functions
import getopt

#C-style parser for command line options
from datetime import datetime, timedelta

#Basic date and time types
from bs4 import BeautifulSoup
import re

#Regular expression operations
import xlrd

#presenting all text strings as Python unicode objects.
import pandas_datareader

import numpy as np
import matplotlib.pyplot as plt

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