Source code for sympy.parsing.latex
from sympy.external import import_module
from .errors import LaTeXParsingError # noqa
[docs]def parse_latex(s):
r"""Converts the string ``s`` to a SymPy ``Expr``
Parameters
==========
s : str
The LaTeX string to parse. In Python source containing LaTeX, *raw strings*
(denoted with `r''`, like this one) are preferred, as LaTeX makes liberal
use of the ``\`` character, which would trigger escaping in normal Python
strings.
>>> from sympy.parsing.latex import parse_latex # doctest: +SKIP
>>> expr = parse_latex(r"\frac {1 + \sqrt {\a}} {\b}") # doctest: +SKIP
>>> expr # doctest: +SKIP
(sqrt(a) + 1)/b
>>> expr.evalf(4, subs=dict(a=5, b=2)) # doctest: +SKIP
1.618
"""
_latex = import_module(
'sympy.parsing.latex._parse_latex_antlr',
__import__kwargs={'fromlist': ['X']})
if _latex is not None:
return _latex.parse_latex(s)