Better scripting with python
Haven't you ever missed writing perl one liners? Or maybe you're more
familiar with python than all the options of find
, but like the text
interaction paradigm? pyli
aims to make it easier to use python and
all it's batteries in conjunction with your favorite hangout: the shell.
pyli
is available via pip
:
::
pip install pyli
Or directly via git
and setup.py
:
::
git clone https://github.com/thenoviceoof/pyli.git
cd pyli
sudo python setup.py
Let's do some warmups:
::
pyli "2+2" # bc
cat file.txt | pyli "line if 'string' in line else None" # grep
cat file.txt | pyli "sum(len(l) + 1 for l in lines)" # wc -m
And now something more complicated:
::
log | pyli "str(time.time()) + ' ' + line" # time stamping a line
cat file.txt | pyli "set(w for s in nltk.sent_tokenize(contents) for w in nltk.word_tokenize)" # bag of words a file
cat file.json | pyli "pickle.dumps(json.loads(conts))" >file.pickle
cat space_sep.dat | pyli "json.dumps(dict(parts))" >file.json
Maybe it makes sense to separate commands:
::
cat index.html | pyli "for l in [a.get('href') for a in bs4.BeautifulSoup(cs).find_all('a')]: print l" | pyli --text='something' "r = requests.get(li); li if text in r.text else None"
cat index.html | pyli "hashlib.sha1(cs).hexdigest()" | pyli "encryptedfile.EncryptedFile(stdout, getpass.getpass()).write(cs)"
Perhaps you want to keep it a one liner, but Python is too opinionated to let you do that:
::
pyli -f "`ls -a`" "for l in f.split('\n'):" " if '.git' == l: print 'git'"
Features:
Populate special CLI oriented variables
line
(li
, l
) - Gives you access to each linelines
(lis
, ls
) - Access to the line
generatorcontents
(cont
, cs
) - Gives you access to all of stdin
in one stringpart
, (p
) - Gives you access to the different fields of a
space-separated lineparts
, (ps
) - Access to the part
generatorstdin
, stdout
, stderr
- A shortcut to sys.std*
streamsline
/part
, then print the last statement
for each lineDo note that you should only access one of these special variables at a time: no work has been put into combining these into something that makes sense, so if you want multiple variables, you'll have to do the legwork yourself.
ast
libraryAlso see the issue tracker <https://github.com/thenoviceoof/pyli/issues?state=open>
_
In alphabetical order:
funcpy <http://www.pixelbeat.org/scripts/funcpy>
_Oneliner <https://github.com/gvalkov/python-oneliner>
_Pyle <https://github.com/aljungberg/pyle>
_pyp <https://code.google.com/p/pyp/>
_Copyright (c) <2014>
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.