Pretty print get_config

[npatki]

RDT 1.0.0 (dev branch)

Problem Description

The new get_config method returns the config dictionary but can also be used to view the current config. In this case, we should consider ways to pretty print the config so it can be easily read. One way to do this: We could sub-class dictionary and override the print method.

Current behavior

Here is the get_config() method. It's hard for me to know where the transformers dictionary begins.

{'sdtypes': {'age': 'integer',
  'credit_card': 'categorical',
  'dollars_spent': 'float',
  'email_optin': 'boolean',
  'last_login': 'categorical'},
 'transformers': {'age': FloatFormatter(missing_value_replacement='mean'),
  'credit_card': FrequencyEncoder(),
  'dollars_spent': FloatFormatter(missing_value_replacement='mean'),
  'email_optin': BinaryEncoder(missing_value_replacement='mode'),
  'last_login': FrequencyEncoder()}}

Expected behavior

A good example of pretty printing a dictionary is the detect_initial_config method. It's much easier to parse the two dictionaries.

{
    "sdtypes": {
        "last_login": "categorical",
        "email_optin": "boolean",
        "credit_card": "categorical",
        "age": "integer",
        "dollars_spent": "float"
    },
    "transformers": {
        "last_login": "FrequencyEncoder()",
        "email_optin": "BinaryEncoder(missing_value_replacement='mode')",
        "credit_card": "FrequencyEncoder()",
        "age": "FloatFormatter(missing_value_replacement='mean')",
        "dollars_spent": "FloatFormatter(missing_value_replacement='mean')"
    }
}