o o h @s`dZddlmZddlmZddlmZmZmZm Z m Z m Z m Z m Z GdddeZddZd S) a This module implements the functionality to take any Python expression as a string and fix all numbers and other things before evaluating it, thus 1/2 returns Integer(1)/Integer(2) We use the ast module for this. It is well documented at docs.python.org. Some tips to understand how this works: use dump() to get a nice representation of any node. Then write a string of what you want to get, e.g. "Integer(1)", parse it, dump it and you'll see that you need to do "Call(Name('Integer', Load()), [node], [], None, None)". You do not need to bother with lineno and col_offset, just call fix_missing_locations() before returning the node. )Basic) SympifyError)parseNodeTransformerCallNameLoadfix_missing_locationsConstantTuplec@s,eZdZddZddZddZddZd S) TransformcCst|||_||_dS)N)r__init__ local_dict global_dict)selfrrrl/var/www/html/construction_image-detection-poc/venv/lib/python3.10/site-packages/sympy/parsing/ast_parser.pyr s  zTransform.__init__cCsTt|jtrtttdt|ggdSt|jtr(tttdt|ggdS|S)NIntegerfuncargskeywordsFloat) isinstancevalueintr rrrfloat)rnoderrrvisit_Constant#s  zTransform.visit_ConstantcCst|j|jvr|S|j|jvr"|j|j}t|ttfst|r!|Sn|jdvr)|Sttt dt t |jggdS)N)TrueFalseSymbolr) idrrrrtypecallabler rrrr )rrname_objrrr visit_Name,s     zTransform.visit_NamecsLfdd|jjD}|j}ttdtt|t|ggd}t|S)Ncsg|]}|qSr)visit).0argrrr :sz*Transform.visit_Lambda..Lambdar)rr'bodyrrrr r )rrrr-nrr*r visit_Lambda9s   zTransform.visit_LambdaN)__name__ __module__ __qualname__r rr&r/rrrrr s  r cCsji}td|z t|dd}Wnty tdt|wt|||}t|dd}t |||S)z Converts the string "s" to a SymPy expression, in local_dict. It converts all numbers to Integers before feeding it to Python and automatically creates Symbols. zfrom sympy import *eval)modezCannot parse %s.z) execrstrip SyntaxErrorrreprr r'compiler3)srraerrr parse_expr@s    r=N)__doc__sympy.core.basicrsympy.core.sympifyrastrrrrrr r r r r=rrrrs   ( $