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import argparse
from datetime import datetime
from json import loads
from requests import get
import pandas as pd
import numpy as np
import pymysql
import yaml
from sqlalchemy import create_engine

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#!/usr/bin/env python

from datetime import datetime
from json import loads
from time import gmtime, mktime, strptime

# LevelDict é um wrapper usando dicionário para LevelDB
# https://github.com/maurobaraldi/leveldict
from leveldict import LevelJsonDict
from requests import get

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# Instalando e importando yahooquery
from yahooquery import Ticker

# Período máximo
petr = Ticker("PETR4.SA")
petr.history(period='max')

# Datas específicas
petr.history(start='2005-05-01', end='2013-12-31')