housing.csv 从github 获取失败

Question

问题遇到的现象和发生背景

从网址：https://github.com/ageron/handson-ml2
从GitHub获取机器 学习 实战： 基于 Scikit- Learn、 Keras 和 TensorFlow： 原 书 第 2 版里面的数据
复制书上coding 到Jupyter

问题相关代码，请勿粘贴截图

全部抄了书上的代码2.3.2 下载数据

运行结果及报错内容

ileNotFoundError: [Errno 2] No such file or directory: 'datasets\housing\housing.csv'

我的解答思路和尝试过的方法

代码检查无误

我想要达到的结果

自动下载成功

Answer 1

题主需要在第二个函数里调用第一个函数，对数据下载并解压后再读取和处理，代码改为如下即可：

import os
import tarfile

from six.moves import urllib
DOWNLOAD_ROOT = "https://raw.githubusercontent.com/ageron/handson-ml2/master/"
HOUSING_PATH = os.path.join("datasets", "housing")
HOUSING_URL = DOWNLOAD_ROOT + "datasets/housing/housing.tgz"
def fetch_housing_data(housing_url=HOUSING_URL, housing_path=HOUSING_PATH):

    if not os.path.isdir(housing_path):
        os.makedirs(housing_path)
    tgz_path = os.path.join(housing_path, "housing.tgz")
    urllib.request.urlretrieve(housing_url, tgz_path)
    housing_tgz = tarfile.open(tgz_path)
    housing_tgz.extractall(path=housing_path)
    housing_tgz.close()

import pandas as pd
def load_housing_data(housing_path=HOUSING_PATH):
    fetch_housing_data()
    csv_path = os.path.join(housing_path, "housing.csv")
    return pd.read_csv(csv_path)

housing = load_housing_data()
print(housing.head())

longitude  latitude  housing_median_age  total_rooms  total_bedrooms  population  households  median_income  median_house_value ocean_proximity
0    -122.23     37.88                41.0        880.0           129.0       322.0       126.0         8.3252            452600.0        NEAR BAY
1    -122.22     37.86                21.0       7099.0          1106.0      2401.0      1138.0         8.3014            358500.0        NEAR BAY
...

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