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Python to RubyAdvent Calendar 2021

Day 8

[py2rb] Ruby#Array -> Python#Tuple

Last updated at Posted at 2022-02-04

はじめに

移植やってます。
( from python 3.7 to ruby 2.7 )

どうすRuby

Rubyの配列から、Numpy.arrayを作成します。

dtype = [['score', Numpy.int8], ['label', Numpy.str_, 1], ['pep', Numpy.float64], ['is decoy', Numpy.bool_]]
psms_ = Numpy.array(PSMS.map{ |s, l, p| [s, l, p, @is_decoy.call([s, l, p])] }, dtype: dtype)

# error
RuntimeError: Wrapped undumpable exception for: PyCall::PyError: <class 'TypeError'>: Field elements must be 2- or 3-tuples, got '['score', <class 'numpy.int8'>]'

tubleで渡せと。

先駆者がいて助かる。

dtype = [PyCall::Tuple.(['score', Numpy.int8]), PyCall::Tuple.(['label', Numpy.str_, 1]), PyCall::Tuple.(['pep', Numpy.float64]), PyCall::Tuple.(['is decoy', Numpy.bool_])]

# error
RuntimeError: Wrapped undumpable exception for: PyCall::PyError: <class 'ValueError'>: invalid literal for int() with base 10: 'A'

ぐぬぬ。

PSMS  [[0, "A", 0.01], [1, "B", 0.011], [2, "C", 0.012],........,[51, "z", 0.061]]

'A'が整数として無効です。

psms_ = Numpy.array(PSMS.map{ |s, l, p| PyCall::Tuple.([s, l, p, @is_decoy.call([s, l, p])]) }, dtype: dtype)

こちらも、tupleで渡さないといけないのね。

メモ

  • Python の tuple を学習した
  • 百里を行く者は九十里を半ばとす
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