a 1$e @sddlZddlZddlmZddlmZmZddlmZddl m Z ej dde d e d ej d d d ddeejeddZdS)N) use_rs_opt)obj_geneval_feature_expression)with_context_env) ObjectEncoderz/Calculate GeoJSON property by Python expression) short_help property_name expressionz --overwriteTFz$Overwrite properties, default: False)is_flagdefaulthelpc Cstd}t|}t|D]\}}|dp0|g} t| D]`\} } |sb|| dvrbtd|t| || d|<|rtjdddtt j | t dq:qd S) a Create a new property on GeoJSON features using the specified expression.  The expression is evaluated in a restricted namespace containing: - sum, pow, min, max and the imported math module - shape (optional, imported from shapely.geometry if available) - bool, int, str, len, float type conversions - f (the feature to be evaluated, allows item access via javascript-style dot notation using munch) The expression will be evaluated for each feature and its return value will be added to the properties as the specified property_name. Existing properties will not be overwritten by default (an Exception is raised). Example  $ fio cat data.shp | fio calc sumAB "f.properties.A + f.properties.B" stdinfeatures propertiesz:{} already exists in properties; rename or use --overwriteF)nl)clsN) clickget_text_streamr enumerateget UsageErrorformatrechojsondumpsr) ctxr r overwriteZuse_rsrsourceiobjrjZfeatr#J/var/www/html/django/DPS/env/lib/python3.9/site-packages/fiona/fio/calc.pycalc s"  r%)rrZcligjrhelpersrrZ fiona.fiorZ fiona.modelrcommandargumentoption pass_contextr%r#r#r#r$s