How to use `EquationsOfState` in Python?

It may be attempting for Pythonistas to use this package in Python, without writing too much code. Luckily, Julia provides such a feature.

First, install PyCall.jl, following their instructions. Notice on macOS, that if you want to install Python from pyenv, you may need to run
```
env PYTHON_CONFIGURE_OPTS="--enable-framework" pyenv install 3.6.9
```
in terminal to install your python, or else Julia will throw an
```
ImportError: No module named site
```
See this issue and another issue for details.
Install PyJulia in Python. Please see its official tutorial for instructions.

Open a (an) Python (IPython) session, start playing!

In [1]: from julia import Unitful

In [2]: from julia.EquationsOfState.Collections import *

In [3]: from julia.EquationsOfState import *

In [4]: Murnaghan(1, 2, 3.0, 4)
Out[4]: <PyCall.jlwrap EquationsOfState.Collections.Murnaghan{Float64}(1.0, 2.0, 3.0, 4.0)>

In [5]: result = lsqfit(
   ...:     BirchMurnaghan3rd(1, 2, 3.0, 0)(Pressure()),
   ...:     [1, 2, 3, 4, 5],
   ...:     [5, 6, 9, 8, 7],
   ...: )

In [6]: result.v0, result.b0, result.bp0
Out[6]: (1.1024687826913997, 29.308616965851673, 12.689089874230556)

In [7]: from julia import Main

In [8]: volumes = Main.eval("data[:, 1] .* UnitfulAtomic.bohr^3")

In [9]: energies = Main.eval("data[:, 2] .* UnitfulAtomic.Ry")

In [10]: Main.eval("EquationsOfState.NonlinearFitting.lsqfit(EquationsOfState.Collections.Murnaghan(224.445371 * UnitfulAtomic.bohr^3, 9.164446 * Unitful.GPa, 3.752432, -161.708856 * UnitfulAtomic.hartree)（EquationsOfState.Energy()), volumes, energies)")
Out[10]: <PyCall.jlwrap EquationsOfState.Collections.Murnaghan{Unitful.Quantity{Float64,D,U} where U where D}(224.5018173532159 a₀^3, 8.896845579229117 GPa, 3.7238388137735674, -161.70884303138902 Eₕ)>

where data is copied from Julia:

In [1]: data = Main.eval("""
   ...:    [
   ...:        159.9086 -323.4078898
                   ⋮          ⋮
   ...:        319.8173 -323.4105393
   ...:    ]
   ...:    """
   ...: )

How to use EquationsOfState in Python?

How to use `EquationsOfState` in Python?