Iwao Dev

先ず Debian 環境に Flask をインストール．
pip3 install Flask

サンプルの hello.py を実行，ブラウザで表示．

AS5202T でも同様に Flask をインストール．
pip3 install Flask

Synology NAS では pip のインストールから．
suto opkg install python-pip
suto opkg install python3-pip

Flask をインストールしてみたが …

Iwao@DS116:~/pyt_test/t_flask$ pip3 install Flask
Collecting Flask
  Using cached https://files.pythonhosted.org/packages/f2/28/2a03252dfb9ebf377f40fba6a7841b47083260bf8bd8e737b0c6952df83f/Flask-1.1.2-py2.py3-none-any.whl
Collecting click>=5.1 (from Flask)
  Using cached https://files.pythonhosted.org/packages/d2/3d/fa76db83bf75c4f8d338c2fd15c8d33fdd7ad23a9b5e57eb6c5de26b430e/click-7.1.2-py2.py3-none-any.whl
Collecting itsdangerous>=0.24 (from Flask)
  Using cached https://files.pythonhosted.org/packages/76/ae/44b03b253d6fade317f32c24d100b3b35c2239807046a4c953c7b89fa49e/itsdangerous-1.1.0-py2.py3-none-any.whl
Collecting Werkzeug>=0.15 (from Flask)
  Using cached https://files.pythonhosted.org/packages/cc/94/5f7079a0e00bd6863ef8f1da638721e9da21e5bacee597595b318f71d62e/Werkzeug-1.0.1-py2.py3-none-any.whl
Collecting Jinja2>=2.10.1 (from Flask)
  Using cached https://files.pythonhosted.org/packages/30/9e/f663a2aa66a09d838042ae1a2c5659828bb9b41ea3a6efa20a20fd92b121/Jinja2-2.11.2-py2.py3-none-any.whl
Collecting MarkupSafe>=0.23 (from Jinja2>=2.10.1->Flask)
  Using cached https://files.pythonhosted.org/packages/b9/2e/64db92e53b86efccfaea71321f597fa2e1b2bd3853d8ce658568f7a13094/MarkupSafe-1.1.1.tar.gz
    Complete output from command python setup.py egg_info:
    /opt/lib/python3.6/distutils/dist.py:261: UserWarning: Unknown distribution option: 'project_urls'
    /opt/lib/python3.6/distutils/dist.py:261: UserWarning: Unknown distribution option: 'include_package_data'
    /opt/lib/python3.6/distutils/dist.py:261: UserWarning: Unknown distribution option: 'python_requires'
    usage: -c [global_opts] cmd1 [cmd1_opts] [cmd2 [cmd2_opts] ...]
       or: -c --help [cmd1 cmd2 ...]
       or: -c --help-commands
       or: -c cmd --help

    error: invalid command 'egg_info'

    ----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-dsqn65uh/MarkupSafe/
Iwao@DS116:~/pyt_test/t_flask$ 

「 Command python setup.py egg_info faild with error code 1 」で検索 をかけると pip などが古いとある．
次の様にして pip などを更新．
sudo pip install –upgrade pip setuptools

先日の Python コードのバグ（整数で計算されてしまうため結果が異なる）．
原因はすぐわかるが，対応は悩む所．
コードを分解して動作を確認してみた．

def	r_cs_o	(c , s)	:	return	(        ( c*c )  / ( 8 *s )  +  s/2  )
def	r_cs_n	(c , s)	:	return	(        ( c*c )  / ( 8.*s )  +  s/2. )

print   (6*6)
print   (8*1)

print   (36/8)
print   (36/8.)

print   (1/2)
print   (1/2.)

print	("")
print   (36/8 +1/2 )
print   (36/8.+1/2.)

print	("")
print	(r_cs_o(6,1))
print	(r_cs_n(6,1))

https://docs.python.org/ja/3/howto/pyporting.html?highlight=除算

Synology NAS DSM では Python 2.7 が標準で入っているみたい．
「パッケージ センター」で Python3 を追加できる．

C:\Program Files\Microsoft Office\Office14>cd C:\Users\Iwao\AppData\Local\Temp

C:\Users\Iwao\AppData\Local\Temp>ssh -l Iwao -p 2200 192.168.1.116
Iwao@192.168.1.116's password:
Iwao@DS116:~$ python3
Python 3.5.1 (default, Jan 29 2018, 14:16:30)
[GCC 4.9.3 20150311 (prerelease)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>>
Iwao@DS116:~$ python2
Python 2.7.12 (default, May 12 2020, 04:48:57)
[GCC 4.9.3 20150311 (prerelease)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>>
Iwao@DS116:~$ python
Python 2.7.12 (default, May 12 2020, 04:48:57)
[GCC 4.9.3 20150311 (prerelease)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>>
Iwao@DS116:~$

ASUSTOR NAS ADM では入ってない．「App Central」でインストール可能．