dictionary key read processor

SharedProcessors/DictionaryKeyRead.py

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+#!/usr/local/autopkg/python
+#
+# James Stewart @JGStew - 2023
+#
+"""See docstring for DictionaryKeyRead class"""
+
+from autopkglib import (  # pylint: disable=import-error,wrong-import-position,unused-import
+    Processor,
+    ProcessorError,
+)
+
+__all__ = ["DictionaryKeyRead"]
+
+
+class DictionaryKeyRead(Processor):
+    """Reads a key-value pair from a Python dictionary."""
+
+    description = __doc__
+
+    input_variables = {
+        "input_dictionary": {
+            "required": True,
+            "description": "The Python dictionary to read from.",
+        },
+        "dictionary_key": {
+            "required": True,
+            "description": "The key in the dictionary whose value you want to read.",
+        },
+        "output_variable": {
+            "required": True,
+            "description": "Name of the output variable to store the value.",
+        },
+    }
+
+    def read_dictionary_key(self, input_dictionary, dictionary_key):
+        try:
+            value = input_dictionary.get(dictionary_key)
+            return value
+        except Exception as e:
+            raise ProcessorError(
+                f"Failed to read key '{dictionary_key}' from the dictionary: {str(e)}"
+            )
+
+    def main(self):
+        input_dictionary = self.env.get("input_dictionary")
+        dictionary_key = self.env.get("dictionary_key")
+        output_variable = self.env.get("output_variable")
+
+        value = self.read_dictionary_key(input_dictionary, dictionary_key)
+
+        if value is not None:
+            self.output(f"Read '{dictionary_key}' from the dictionary: {value}")
+            self.env[output_variable] = value
+        else:
+            raise ProcessorError(f"Key '{dictionary_key}' not found in the dictionary.")
+
+
+if __name__ == "__main__":
+    PROCESSOR = DictionaryKeyRead()
+    PROCESSOR.execute_shell()

Test-Recipes/DictionaryKeyRead.test.recipe.yaml

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+---
+Description: Test TemplateDictionaryAppendInput Processor
+Identifier: com.github.jgstew.test.TemplateDictionaryAppendInput
+Input:
+  NAME: TemplateDictionaryAppendInputTest
+  DisplayName: TemplateDictionaryAppendInput
+  Template_version: "0.0.0"
+  Template_example: "example value"
+MinimumVersion: "2.3"
+Process:
+  - Processor: com.github.jgstew.SharedProcessors/TemplateDictionaryAppendInput
+  - Processor: com.github.jgstew.SharedProcessors/DictionaryKeyRead
+    Arguments:
+      input_dictionary: template_dictionary
+      dictionary_key: version
+      output_variable: version
+  - Processor: com.github.jgstew.SharedProcessors/AssertInputContainsString
+    Arguments:
+      input_string: "%version%"
+      assert_string: "0.0.0"