Error Handling

UTMS provides error handling mechanisms for common scenarios like missing keys, invalid input, and system time issues.

Common Errors

• KeyError: Raised when a configuration key is missing or invalid.

  • Example: KeyError: ‘ntp.servers’

• ValueError: Raised when an invalid value is provided (e.g., out-of-range index).

  • Example: ValueError: Index out of range

• TypeError: Raised when an operation is performed on incompatible data types.

  • Example: TypeError: Expected a list, got a string

Handling Errors in Scripts

UTMS provides useful error messages. For example, if you attempt to use a non-existent configuration key:

poetry run utms config print nonexistent_key
Output: KeyError: 'nonexistent_key'

To handle errors in Python scripts, use try-except blocks:

try:
    utms.config.get_value("ntp.servers")
except KeyError as e:
    print(f"Error: {e}")