% pip install segno
DEPRECATION: Python 2.7 will reach the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 won\'t be maintained after that date. A future version of pip will drop support for Python 2.7.
You are using pip version 19.0.3, however version 19.1.1 is available.
You should consider upgrading via the 'pip install --upgrade pip'command.
# アアアッ、すみません
% which pip
/Users/otiai10/.venv/default/bin/pip
# venv使っててこれかよ
% cd ~
% rm -rf .venv
% mkdir ~/.venv
% cd .venv
% virtualenv create default -p /usr/local/bin/python3
% source ./default/bin/activate
% which pip
/Users/otiai10/.venv/default/bin/pip
% python -V
Python 3.6.8# オッケ
% pip install segno
% segno --help
% segno "https://before11.hatenablog.com/" -o myblog.png
% gat myblog.png
# 小せえ!
% segno "https://before11.hatenablog.com/" -o myblog.png --scale 8
% gat myblog.png
# いい感じ