python-textops provides many text operations at string level, list level or whole text level.
These operations can be chained with a 'dotted' or 'piped' notation.
Chained operations are stored into a single lazy object, they will be executed only when an input text will be provided.
To install:
pip install python-textops
The usual way to use textops is something like below. IMPORTANT : Note that textops library redefines the python bitwise OR operator '|' in order to use it as a 'pipe' like in a Unix shell:
from textops import *
result = "an input text" | my().chained().operations()
or
for result_item in "an input text" | my().chained().operations():
do_something(result_item)
or
myops = my().chained().operations()
# and later in the code, use them :
result = myops("an input text")
or
result = "an input text" | myops
An "input text" can be :
- a simple string,
- a multi-line string (one string having newlines),
- a list of strings,
- a strings generator,
- a list of lists (useful when you cut lines into columns),
- a list of dicts (useful when you parse a line).
So one can do:
>>> 'line1line2line3' | grep('2').tolist()
['line1line2line3']
>>> 'line1\nline2\nline3' | grep('2').tolist()
['line2']
>>> ['line1','line2','line3'] | grep('2').tolist()
['line2']
>>> [['line','1'],['line','2'],['line','3']] | grep('2').tolist()
[['line', '2']]
>>> [{'line':1},{'line':'2'},{'line':3}] | grep('2').tolist()
[{'line': '2'}]
Piped then dotted notation (recommended):
>>> print 'this is an error\nthis is a warning' | grepi('error').first().upper()
THIS IS AN ERROR
You could use the pipe everywhere (internally a little less optimized, but looks like shell):
>>> print 'this is an error\nthis is a warning' | grepi('error') | first() | strop.upper()
THIS IS AN ERROR
To execute an operation directly from strings, lists or dicts with the dotted notation,
you must use textops Extended types : StrExt, ListExt or DictExt:
>>> s = StrExt('this is an error\nthis is a warning')
>>> print s.grepi('error').first().upper()
THIS IS AN ERROR
Please, read documentation here :