====== BeautifulSoup のインストール ======

===== Python 仮想環境 =====
Python バージョン確認\\
<code>
$ python -VV
</code>
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<code>
Python 3.7.7 (default, Mar 13 2020, 10:23:39)
[GCC 9.2.1 20190827 (Red Hat 9.2.1-1)]
</code>
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Python 仮想環境の作成\\
<code>
$ python -m venv py3_scraping
</code>

Python 仮想環境の有効化\\
<code>
$ . py3_scraping/bin/activate
</code>
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<code>
(py3_scraping) $
</code>
</WRAP>

Python 仮想環境の pip を更新\\
<code>
(py3_scraping) $ python -m pip install --upgrade pip
</code>
<WRAP prewrap 100% #result>
<code>
Collecting pip
  Downloading https://files.pythonhosted.org/packages/54/2e/df11ea7e23e7e761d484ed3740285a34e38548cf2bad2bed3dd5768ec8b9/pip-20.1-py2.py3-none-any.whl (1.5MB)
     |████████████████████████████████| 1.5MB 2.0MB/s
Installing collected packages: pip
  Found existing installation: pip 19.1.1
    Uninstalling pip-19.1.1:
      Successfully uninstalled pip-19.1.1
Successfully installed pip-20.1
</code>
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===== インストール =====
BeautifulSoup をインストールするには、以下のコマンドを実行する。\\
<code>
$ pip install beautifulsoup4
</code>
<WRAP prewrap 100% #result>
<code>
Collecting beautifulsoup4
  Downloading beautifulsoup4-4.9.0-py3-none-any.whl (109 kB)
     |████████████████████████████████| 109 kB 1.9 MB/s
Requirement already satisfied: soupsieve>1.2 in ./py3_scraping/lib/python3.7/site-packages (from beautifulsoup4) (2.0)
Could not build wheels for soupsieve, since package 'wheel' is not installed.
Installing collected packages: beautifulsoup4
Successfully installed beautifulsoup4-4.9.0
</code>
</WRAP>

必要に応じて requests をインストールする。\\
<code>
$ pip install requests
</code>
<WRAP prewrap 100% #result>
<code>
Collecting requests
  Downloading requests-2.23.0-py2.py3-none-any.whl (58 kB)
     |████████████████████████████████| 58 kB 1.9 MB/s
Collecting chardet<4,>=3.0.2
  Downloading chardet-3.0.4-py2.py3-none-any.whl (133 kB)
     |████████████████████████████████| 133 kB 6.0 MB/s
Collecting urllib3!=1.25.0,!=1.25.1,<1.26,>=1.21.1
  Downloading urllib3-1.25.9-py2.py3-none-any.whl (126 kB)
     |████████████████████████████████| 126 kB 14.0 MB/s
Collecting idna<3,>=2.5
  Downloading idna-2.9-py2.py3-none-any.whl (58 kB)
     |████████████████████████████████| 58 kB 24.3 MB/s
Collecting certifi>=2017.4.17
  Downloading certifi-2020.4.5.1-py2.py3-none-any.whl (157 kB)
     |████████████████████████████████| 157 kB 12.5 MB/s
Installing collected packages: chardet, urllib3, idna, certifi, requests
Successfully installed certifi-2020.4.5.1 chardet-3.0.4 idna-2.9 requests-2.23.0 urllib3-1.25.9
</code>
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必要に応じて pandas をインストールする。\\
<code>
$ pip install pandas
</code>
<WRAP prewrap 100% #result>
<code>
Collecting pandas
  Downloading pandas-1.0.3-cp37-cp37m-manylinux1_x86_64.whl (10.0 MB)
     |████████████████████████████████| 10.0 MB 2.1 MB/s
Collecting numpy>=1.13.3
  Downloading numpy-1.18.3-cp37-cp37m-manylinux1_x86_64.whl (20.2 MB)
     |████████████████████████████████| 20.2 MB 12.2 MB/s
Collecting python-dateutil>=2.6.1
  Downloading python_dateutil-2.8.1-py2.py3-none-any.whl (227 kB)
     |████████████████████████████████| 227 kB 12.7 MB/s
Collecting pytz>=2017.2
  Downloading pytz-2020.1-py2.py3-none-any.whl (510 kB)
     |████████████████████████████████| 510 kB 10.2 MB/s
Collecting six>=1.5
  Downloading six-1.14.0-py2.py3-none-any.whl (10 kB)
Installing collected packages: numpy, six, python-dateutil, pytz, pandas
Successfully installed numpy-1.18.3 pandas-1.0.3 python-dateutil-2.8.1 pytz-2020.1 six-1.14.0
</code>
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===== 参考文献 =====
[[https://gammasoft.jp/blog/difference-find-and-select-in-beautiful-soup-of-python/|Beautiful Soup のfind_all( ) と select( ) の使い方の違い | ガンマソフト株式会社]]\\
[[https://akatak.hatenadiary.jp/entry/2018/08/12/093126|Pythonによる不動産情報のデータ取得＆分析（１）【賃貸物件／Webスクレイピング編】 - akatak’s blog]]\\