300-435 · Question #18
Refer to the exhibit. The task is to create a Python script to display an alert message when a Meraki Not-Security Appliance goes down. The exhibit shows sample data that is received. Which Python…
The correct answer is C. print("The Switch: "+return_val['device Name']+", went down at: "+return_val['occurredAt']+"). To access values in a Python dictionary representing JSON data, you must use bracket notation with string keys to retrieve specific field values.
Question
Exhibits
Options
- Awith return_val: print("The Switch: "+deviceName+", went down at: "+occurredAt)
- Bprint("The Switch: "+return_val.deviceName+", went down at: "+return_val.occurredAt)
- Cprint("The Switch: "+return_val['device Name']+", went down at: "+return_val['occurredAt']+")
- Dwith items as return_val: print("The Switch: "+items.deviceName+", went down at: "+items.occurredAt)
How the community answered
(37 responses)- A3% (1)
- C92% (34)
- D5% (2)
Why each option
To access values in a Python dictionary representing JSON data, you must use bracket notation with string keys to retrieve specific field values.
This syntax is incorrect for accessing dictionary values; `with return_val:` is for context managers, and `deviceName` and `occurredAt` would be undefined variables in this scope without explicit assignment.
Python dictionaries do not allow attribute-style access (e.g., `return_val.deviceName`); this dot notation is typically used for object attributes, not dictionary keys.
When JSON data is parsed into a Python dictionary (like `return_val`), values are accessed using their string keys with bracket notation, such as `return_val['deviceName']` and `return_val['occurredAt']`. This correctly extracts the required device name and time from the dictionary.
The `with items as return_val:` syntax is syntactically incorrect for iterating or assigning dictionary values in this context and `items.deviceName` would still be an invalid way to access dictionary elements.
Concept tested: Python dictionary access and JSON parsing
Source: https://docs.python.org/3/tutorial/datastructures.html#dictionaries
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