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calculate_python_expression [2026/07/22 03:32] hermann |
calculate_python_expression [2026/07/22 18:15] (current) hermann |
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| | [[Extract Struct Tuple]] | A tuple value | | | [[Extract Struct Tuple]] | A tuple value | | ||
| - | Each functor takes two inputs: the ''Struct'' returned by ''CalculatePythonExpression'', and the name of the entry to extract as a string constant. For example, to retrieve a numeric output named ''patchCount'' and a table output named ''filteredPatches'': | + | Each functor takes two inputs: the ''Struct'' returned by ''CalculatePythonExpression'', and the name of the entry to extract as a string constant. For example, to retrieve a numeric output named ''patchCount'' and a table output named ''filteredPatches'' — the ''String $"(...)"'' wrapper around the Python code is explained in [[#writing_the_expression_in_ego_script|Writing the expression in EGO Script]] below: |
| <code> | <code> | ||
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| The //packages// port takes one package identifier per line, in any form accepted by ''pip''. It only installs — unlike ''dinamica.package()'', it does not also import the module, and it does not support specifying a separate install name and import name. Every listed package is installed before the expression runs, but the expression must still import each one itself, using its actual importable name (which may differ from the name given to ''pip''): | The //packages// port takes one package identifier per line, in any form accepted by ''pip''. It only installs — unlike ''dinamica.package()'', it does not also import the module, and it does not support specifying a separate install name and import name. Every listed package is installed before the expression runs, but the expression must still import each one itself, using its actual importable name (which may differ from the name given to ''pip''): | ||
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| + | The //packages// port: | ||
| <code> | <code> | ||
| numpy | numpy | ||
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| </code> | </code> | ||
| + | The expression: | ||
| <code> | <code> | ||
| import numpy | import numpy | ||
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| === dinamica.prepareTable() === | === dinamica.prepareTable() === | ||
| - | Converts a list of lists into a table ready to be assigned to an output. The first inner list must be the header row. | + | Converts a list of lists into a table ready to be assigned to an output. The first inner list must be the header row. As with any table (see [[ego_script#constants|Constants]]), each column's type is inferred from its own values: a column of ''int''/''float'' values produces a Real column, a column of ''str'' values produces a String column. |
| ^ Parameter ^ Type ^ Default ^ Description ^ | ^ Parameter ^ Type ^ Default ^ Description ^ | ||
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| === dinamica.prepareLookupTable() === | === dinamica.prepareLookupTable() === | ||
| - | Converts a list of lists into a lookup table ready to be assigned to an output. The first inner list must be the header row. | + | Converts a list of lists into a lookup table ready to be assigned to an output. The first inner list must be the header row. Lookup tables are always Real-typed on both key and value sides — there is no String option — so every value in ''lut'' must be numeric. |
| ^ Parameter ^ Type ^ Default ^ Description ^ | ^ Parameter ^ Type ^ Default ^ Description ^ | ||
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| === dinamica.toTable() === | === dinamica.toTable() === | ||
| - | Converts several Python data shapes into a valid Dinamica table for output. | + | Converts several Python data shapes into a valid Dinamica table for output. Column types are inferred the same way as ''dinamica.prepareTable()'' — except for a flat list, which always produces a Real-typed lookup table with sequential keys, matching the Real-only rule for lookup tables. |
| ^ Parameter ^ Type ^ Default ^ Description ^ | ^ Parameter ^ Type ^ Default ^ Description ^ | ||
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| CalculatePythonExpression | CalculatePythonExpression | ||
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