pytexit.core.core module

Parser and core Routines

class pytexit.core.core.LatexVisitor(dummy_var, upperscript, lowerscript, verbose, simplify_multipliers, simplify_fractions, simplify_ints, tex_multiplier)

Bases: ast.NodeVisitor

Parameters:

• simplify_multipliers (bool) –

  if True, simplify expression if multiplier is a float. Ex:

  2*a -> 2a
  a*3.5 -> 3.5a
  

  see visit_BinOp() for more information. Default True.

• simplify_fractions (bool) – if True, simplify fractions. see visit_BinOp() for more information. Default False.
• simplify_ints (bool) – see visit_BinOp() for more information. Default False.

brackets(expr)

Enclose expr in {…}

convert_symbols(expr)

division(up, down)

generic_prec(n)

generic_visit(n)

Called if no explicit visitor function exists for a node.

group(expr)

Returns expr, add brackets if needed

looks_like_int(a)

Check if the input a looks like an integer

operator(func, args=None)

parenthesis(expr)

power(expr, power)

prec(n)

prec_BinOp(n)

prec_UnaryOp(n)

sqrt(args)

visit_Add(n)

visit_Assign(n)

Rewrite Assign function (instead of executing it)

visit_BinOp(n)

visit_BitAnd(n)

visit_BitOr(n)

visit_BitXor(n)

visit_Call(n)

Node details : n.args, n.func, n.keywords, n.kwargs

visit_Compare(n)

Rewrite Compare function (instead of executing it)

visit_Invert(n)

visit_LShift(n)

visit_ListComp(n, kwout=False)

Analyse a list comprehension Output : - kw : used by some functions to display nice formulas (e.g : sum) - args : standard output to display a range in other cases

visit_Mod(n)

visit_Mult(n)

visit_Name(n)

Special features: - Recognize underscripts in identifiers names (default: underscore) - Recognize upperscripts in identifiers names (default: ˆ, valid in Python3) Note that using ˆ is not recommanded in variable names because it may be confused with the operator ^, but in some special cases of extensively long formulas with lots of indices, it may help the readability of the code

visit_Not(n)

visit_Num(n)

visit_RShift(n)

visit_Sub(n)

visit_UAdd(n)

visit_USub(n)

visit_UnaryOp(n)

visit_list(n)

pytexit.core.core.preprocessing(expr, simplify)

Pre-process a string.

pytexit.core.core.replace_scientific(s)

Replace ‘NUMBER e NUMBER’ with powers of 10

pytexit.core.core.simplify(s)

Cleans the generated text in post-processing

pytexit.core.core.uprint(*expr)

Deals with encoding problems