Lazy dev exp+

tools & tips

agenda

Linux
- bash: .bashrc, CLI hotkey, prompt
- virtualenv: shortcut, cache
- byobu: terminal window manager
Python
- Django debug case
- one-liners
Web
- Firefox
- Chrome
Others: bitcoin? emacs?

Linux::bash

.bashrc
- history. HISTFILESIZE, HISTSIZE, histappend...
- nice prompt for git/hg
https://github.com/milkbikis/powerline-bash
function _update_ps1() { export PS1="$(~/Scripts/powerline-bash.py --cwd-only $?)" }
- export PROMPT_COMMAND="history -a; _update_ps1"
- use CDPATH, can cd subdir in anywhere.
export CDPATH='.:~:~/project'
CLI hotkey
- emacs mode. seach, move to start/end, <alt> + .
- vi mode. set -o vi
- work on python shell, mysql shell, mongo shell, etc...

Byobu

window manager, backend is tmux/screen
teamocil + tmux Link: preview, repo

virtualenv

check site packages
- yolk or 'pip freeze --local'
virtualenvwrapper
- dynamic load
- tips and tricks
- alias v='workon'
alias v.mk='mkvirtualenv --distribute'
- error. import random... execute mkvirtualenv name
cache
export PIP_DOWNLOAD_CACHE=$HOME/.pip/DIR
sudo visudo, add:
Defaults env_keep += "PIP_DOWNLOAD_CACHE"

Other

script ps_mem.py download @github
hibernate
fab
select clip access
one more script?

wanted

window capture. wmctrl?
番茄钟 / workrave

PYTHON

Django debug case

ImportError: No module named urls

strace
oneliners
$ echo '{"foo": "lorem", "bar": "ipsum"}' | python -mjson.tool | pygmentize -l json

$ python -m smtpd -n -c DebuggingServer localhost:25

$ python -m SimpleHTTPServer 8080

Don't use

os.chdir()

in Django

with uwsgi

! ! !

for loop in pyhon

Counting, without counting, in Python: Brandon Rhodes

# Creates one million integers

for i in range(1000000):
    print

# Creates them one at a time

for i in xrange(1000000):
    print

简单的测试 (1 ms = 1000 us = 1000,000 ns) wiki

$ python -m timeit \
>  -s 'from itertools import repeat' \
>  'for x in repeat(None, 1000000): pass'

100 loops, best of 3: 16.8 msec per loop

run it

$ python -m timeit -s 'from itertools import repeat' 'for x in range(1000000): pass'

10 loops, best of 3: 52.8 msec per loop

$ python -m timeit -s 'from itertools import repeat' 'for x in xrange(1000000): pass'

100 loops, best of 3: 15 msec per loop

$ python -m timeit -s 'from itertools import repeat' 'for x in repeat(None, 1000000): pass'
100 loops, best of 3: 11.1 msec per loop

$ python -m timeit -s 'for x in xrange(1000000): pass'

100000000 loops, best of 3: 0.0111 usec per loop

Web

Firefox addon
server switcher
scrapbook
lastpass
xml and json view
Chrome
User Agent and frame width
middle click in new tab
wanted
one key search

other::bitcoin

K 线图

mining

专业矿工

notes

teamviewer: remote control
mining pool. p2pool
blockchain
key

FAq

51% attack
庞氏骗局?
GPU vs CPU

other::emacs?

learning curves

feature

minor mode
buffer
keyboard flow
remote edit
macros
Emacs（源自Editor MACroS，宏编辑器）
<alt+x> execute function
extension (package)
customize?
scp case
stardict integrate

Plugin

desktop
magit.el
ido
flymake
Org-mode (with MobileOrg)
info and help
pymacs + rope
yasnippet
sqlplus.el

wanted

python spec. align line
better project
navigator
python shell
window switch

resourcEs

Links
@pycoders Pycoders Weekly
BOSO (Top Questions on Stack Overflow)
Docs
.bashrc
dotfile repo@bitbucket (private, need request)

Lazy dev exp+ tools & tips

Made with Slides.com BESbswyBESbswyBESbswyBESbswy