libpython-clj usage examples (Clojure ❤️ Python?)

repl.clj

dev> (require '[libpython-clj.python :as py])
nil
dev> (py/initialize! :python-executable venv-python
                     :library-path dylib-path)
...
dev> (require '[libpython-clj.require :refer [require-python]])
nil
dev> (require-python '[numpy :as np]
                     '[numpy.random :as np.rand]
                     '[pandas :as pd])
:ok
dev> (defn create-dataset [num]
       (reduce (fn [dataset i]
                 (let [x (double (/ i (dec num)))
                       y (+ (np/sin (* 2 np/pi x))
                            (np.rand/normal :scale 0.3))]
                   (py/py. dataset append (pd/Series [x y] :index ["x" "y"])
                           :ignore_index true)))
               (pd/DataFrame :columns ["x" "y"])
               (range num)))
#'dev/create-dataset
dev> (create-dataset 10)
          x         y
0  0.000000 -0.476798
1  0.111111  1.041657
2  0.222222  0.806179
3  0.333333  0.566477
4  0.444444 -0.060949
5  0.555556 -0.228797
6  0.666667 -1.143311
7  0.777778 -0.448987
8  0.888889 -0.117432
9  1.000000 -0.424472
dev> (py/py.- *1 y)
0   -0.476798
1    1.041657
2    0.806179
3    0.566477
4   -0.060949
5   -0.228797
6   -1.143311
7   -0.448987
8   -0.117432
9   -0.424472
Name: y, dtype: float64
dev> (type *2)
:pyobject
dev> (py/python-type *3)
:data-frame

https://github.com/clj-python/libpython-clj

cf. https://github.com/enakai00/ml4se/blob/master/scripts/02-square_error.py