schematize.py

### For finding schema

def schematize(obj):
    '''
    Get schema of nested JSON, assuming first item in lists.
    '''
    if isinstance(obj, dict):
        return {k: schematize(v) for k, v in obj.items()}
    elif isinstance(obj, list):
        return [schematize(elem) for elem in obj][:1]
    else:
        return type(obj)  # no container, just values (str, int, float)

### //
# EXAMPLES:
# How do we call this? literal-schema ?
#
# Data:
# {'hello': 'world'}
#
# Schema:
# {'hello': 'STRING'}
#
# Data:
#
# {'hello': {'new': 'world'}}
#
# Schema:
#
# {'hello': {'new': 'STRING'}}
#
#
# Data:
#
# {'hello': ['a', 'b', 'c']}
#
# Schema:
#
# {'hello': ['STRING']}
#
#
# Data:
#
# {'hello': [{'new': 'world', 'index': 1}, {'new': 'great', 'index': 2}]}
#
# Schema:
#
# {'hello': [{'new': 'STRING', 'index': 'INTEGER'}]}