poser 0.2.0

Dysfunctional programming in Python with all the side effects.

The readme is a work in progress.

Be a poser

poser is a fluent interface for lazy, (dis)functional python programming.

    pip install poser

disfunctional programming === Functional programming with all the side effects.

poser API

    from poser import λ, Composition, Λ, watch
    from toolz.curried import *; from toolz.curried.operator import *

Chainable function compositions

λ composes a higher-order function that will pipe a set of arguments and keywords through an ordered list of functions.

    f = (
        λ.range()
        .map(
            λ.mul(10))
        .list())

This composition is compared below with a toolz.compose, toolz.pipe, and standard lib python.

   assert f(10) \
        == compose(list, map(mul(10)), range)(10) \
        == pipe(10, range, map(mul(10)), list) \
        == list(map(mul(10), range(10)))

The explicit api

The api above uses shortcuts to modules that a hasty programmer may prefer. The explicit api accesses functions by their package names first.

    g = λ.builtins.range().map(
        λ.operator.mul(10)
    ).builtins.list()

Imports

poser will import modules if they are not available. For example, if pandas is not __import__ed then poser will __import __ it.

λ.pandas.DataFrame()

Symbollic composition

    assert (λ[range] * λ.mul(10) + list)(10) == f(10)

    if __name__== '__main__':
        !jupyter nbconvert --to markdown readme.ipynb
        !ipython -m poser

[NbConvertApp] Converting notebook readme.ipynb to markdown
[NbConvertApp] Writing 1600 bytes to readme.md
[NbConvertApp] Converting notebook poser.ipynb to python
[NbConvertApp] Writing 14787 bytes to poser.py
reformatted poser.py
All done! ✨ 🍰 ✨
1 file reformatted.
Fixing /Users/tonyfast/poser/poser.py
]0;IPython: tonyfast/poserTestResults(failed=0, attempted=67)
Name       Stmts   Miss Branch BrPart  Cover
--------------------------------------------
poser.py     196      0     69      0   100%
parsing /Users/tonyfast/poser/poser.py...
]0;IPython: tonyfast/poser<IPython.core.display.SVG object>
parsing /Users/tonyfast/poser/poser.py...
<IPython.core.display.SVG object>