o ŀg @sUdZddlmZddlZddlmZddlmZddlm Z m Z ddl m Z m Z ddlmZer7dd lmZee e ZdddZGdddejdZGdddeZGdddeZeedZded<dS)z) Engine classes for :func:`~pandas.eval` ) annotationsN) TYPE_CHECKING)NumExprClobberingError) align_termsreconstruct_object)MATHOPS REDUCTIONS)printing)Exprexprr returnNonecCs@|j}|t@}|rddd|D}td|d|ddS)z Attempt to prevent foot-shooting in a helpful way. Parameters ---------- expr : Expr Terms can contain z, cSsg|]}t|qS)repr).0xrrS/var/www/html/myenv/lib/python3.10/site-packages/pandas/core/computation/engines.py )sz+_check_ne_builtin_clash..zVariables in expression "z" overlap with builtins: ()N)names _ne_builtinsjoinr)r roverlapsrrr_check_ne_builtin_clashs rc@sNeZdZdZdZdddZddd Zdd d ZedddZ e j ddZ dS)AbstractEnginez/Object serving as a base class for all engines.Fr r cCs||_d|_d|_dSN)r aligned_axes result_type)selfr rrr__init__4s zAbstractEngine.__init__strcCs t|jS)zo Convert an expression for evaluation. Defaults to return the expression as a string. )r pprint_thingr rrrrconvert9s zAbstractEngine.convertobjectcCs:|js t|jj\|_|_|}t|j||j|jjjS)a* Run the engine on the expression. This method performs alignment which is necessary no matter what engine is being used, thus its implementation is in the base class. Returns ------- object The result of the passed expression. ) _is_alignedrr termsrr _evaluater return_type)rresrrrevaluateAs  zAbstractEngine.evaluateboolcCs|jduo |jduSr)rrr#rrrr&VszAbstractEngine._is_alignedcCsdS)a Return an evaluated expression. Parameters ---------- env : Scope The local and global environment in which to evaluate an expression. Notes ----- Must be implemented by subclasses. Nrr#rrrr(ZszAbstractEngine._evaluateNr r )r r!)r r%)r r,) __name__ __module__ __qualname____doc__ has_neg_fracr r$r+propertyr&abcabstractmethodr(rrrrr/s    r) metaclassc@seZdZdZdZddZdS) NumExprEnginezNumExpr engine classTcCs6ddl}|}|jj}|j}t|j|j||dS)Nr) local_dict)numexprr$r env full_scoperr+)rnerr:scoperrrr(ps  zNumExprEngine._evaluateN)r.r/r0r1r2r(rrrrr7ks r7c@s&eZdZdZdZddZd ddZd S) PythonEnginezS Evaluate an expression in Python space. Mostly for testing purposes. FcCs|Sr)r r#rrrr+szPythonEngine.evaluater r cCsdSrrr#rrrr(szPythonEngine._evaluateNr-)r.r/r0r1r2r+r(rrrrr>|s r>)r9pythonzdict[str, type[AbstractEngine]]ENGINES)r r r r )r1 __future__rr4typingr pandas.errorsrpandas.core.computation.alignrrpandas.core.computation.opsrrpandas.io.formatsr pandas.core.computation.exprr frozensetrrABCMetarr7r>r@__annotations__rrrrs$       <