Python Runtime Semantics in pyrt

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Overview

pyrt provides the Python 3 runtime semantics required by R packages generated with pyport:

Reference-semantics containers (py_list(), py_dict(), py_set(), py_tuple())
C3 MRO classes, multiple inheritance, descriptors (py_property(), py_super())
0-based negative and step slicing (py_slice(), py_getitem(), py_setitem())
Arbitrary-precision integers (gmp::bigz) with floor division toward \(-\infty\)
Bit-exact CPython 3.12 random (py_random) and numpy.random.RandomState
Standard library (math, itertools, functools, collections, datetime, re, json) and numpy / scipy / pandas bridges via py_stdlib()

library(pyrt)

# Reference-semantics list
xs <- py_list(list(10L, 20L, 30L))
alias <- xs
xs$append(40L)
py_len(alias)
#> [1] 4

# Bit-exact CPython 3.12 random
rng <- py_random$Random(42L)
rng$random()
#> [1] 0.6394268

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
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