From e0c0d4b38cde20e2300e86b69414dd9851b47456 Mon Sep 17 00:00:00 2001 From: neodarz Date: Thu, 5 Sep 2019 07:05:07 +0200 Subject: ooo --- dotfiles/cheat/python | 63 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 dotfiles/cheat/python (limited to 'dotfiles/cheat/python') diff --git a/dotfiles/cheat/python b/dotfiles/cheat/python new file mode 100644 index 0000000..7c8f0b2 --- /dev/null +++ b/dotfiles/cheat/python @@ -0,0 +1,63 @@ +# Desc: Python is a high-level programming language. + +# Basic example of server with python +# Will start a Web Server in the current directory on port 8000 +# go to http://127.0.0.1:8000 + +# Python v2.7 +python -m SimpleHTTPServer +# Python 3 +python -m http.server 8000 + +# SMTP-Server for debugging, messages will be discarded, and printed on stdout. +python -m smtpd -n -c DebuggingServer localhost:1025 + +# Pretty print a json +python -mjson.tool + +# Generate requirements.txt +pipreqs /path/to/project + +# Tips +# Ressources available in : cheat python_ressources + +Input: décoder avec `decode()`. +Output: encoder avec `encode('utf-8')` + +lors de l'ouverture d'un fichier: +``` +from codecs import open + +# open() de codec à exactement la même API, y compris avec "with" +f = open('fichier', encoding='encoding') +``` + +# Types + +bytes == bytearray + +# non mutable (non modifiable) +bytes +tuple + +# mutable (modifiable) +bytearray + +# For bytes and bytearray show hex value of each char +[hex(i) for i in header] + +# For string show hex value of each char +[hex(ord(c)) for c in header] + +# Opencv with gstreamer +# Gstreamer not on pipy but present when building... + +git clone --recursive https://github.com/skvark/opencv-python.git +git checkout -b 25 +ENABLE_CONTRIB=ON python setup.py install + +# package developement + +virtualenv .venv_dev +source .venv_dev/bin/activate +pip install -e . # for install package in dev mode -- cgit v1.2.1