Just like PerlTeX or PyLuaTeX (and unlike PythonTeX or
lt3luabridge), this only requires a single run, and variables
are persistent throughout the run. Unlike PerlTeX or PyLuaTeX,
there is no restriction on compiler or script required to run
the code. There is also debugging functionalities TeX errors
results in Python traceback, and Python error results in TeX
traceback. Errors in code executed with the pycode environment
gives the correct traceback point to the Python line of code in
the TeX file. For advanced users, this package allows the user
to manipulate the TeX state directly from within Python, so you
don't need to write a single line of TeX code. CAUTION: In
addition to this LaTeX package you need the Python
pythonimmediate-tex package, which can be obtained from
https://pypi.org/project/pythonimmediate-tex/.
