slchangtw

import numpy as np 
import pandas as pd

from datetime import datetime

# make an example
np.random.seed(0)

item = np.random.choice(['A', 'B'], 10)
year = np.random.choice([2016, 2017], 10)

devhero

# Instruct the interpreter to create a network request and create an object representing the request state. This can be done using the urllib module.

import urllib.request
import tarfile
thetarfile = "http://file.tar.gz"
ftpstream = urllib.request.urlopen(thetarfile)
thetarfile = tarfile.open(fileobj=ftpstream, mode="r|gz")
thetarfile.extractall()

# The ftpstream object is a file-like that represents the connection to the ftp server. Then the tarfile module can access this stream. Since we do not pass the filename, we have to specify the compression in the mode parameter.