Build a Medical Data Validator - Step 44

Python
1

Tell us what’s happening:

I am at my wits’ end. Check Your Code says that my code doesn’t pass, but everything is fine; when I mess up one of the dictionaries in the original medical_records list, terminal gives the correct output. The punctuation is the same as asked too.

Your code so far

import re


medical_records = [
    {
        'patient_id': 'P1001',
        'age': 34,
        'gender': 'Female',
        'diagnosis': 'Hypertension',
        'medications': ['Lisinopril'],
        'last_visit_id': 'V2301',
    },
    {
        'patient_id': 'p1002',
        'age': 47,
        'gender': 'male',
        'diagnosis': 'Type 2 Diabetes',
        'medications': ['Metformin', 'Insulin'],
        'last_visit_id': 'v2302',
    },
    {
        'patient_id': 'P1003',
        'age': 29,
        'gender': 'female',
        'diagnosis': 'Asthma',
        'medications': ['Albuterol'],
        'last_visit_id': 'v2303',
    },
    {
        'patient_id': 'p1004',
        'age': 56,
        'gender': 'Male',
        'diagnosis': 'Chronic Back Pain',
        'medications': ['Ibuprofen', 'Physical Therapy'],
        'last_visit_id': 'V2304',
    }
]


def find_invalid_records(
    patient_id, age, gender, diagnosis, medications, last_visit_id
):

    constraints = {
        'patient_id': isinstance(patient_id, str)
        and re.fullmatch('p\d+', patient_id, re.IGNORECASE),
        'age': isinstance(age, int) and age >= 18,
        'gender': isinstance(gender, str) and gender.lower() in ('male', 'female'),
        'diagnosis': isinstance(diagnosis, str) or diagnosis is None,
        'medications': isinstance(medications, list)
        and all([isinstance(i, str) for i in medications]),
        'last_visit_id': isinstance(last_visit_id, str)
        and re.fullmatch('v\d+', last_visit_id, re.IGNORECASE)
    }

    return [key for key, value in constraints.items() if not value]


def validate(data):
    is_sequence = isinstance(data, (list, tuple))

    if not is_sequence:
        print('Invalid format: expected a list or tuple.')
        return False
        
    is_invalid = False
    key_set = set(
        ['patient_id', 'age', 'gender', 'diagnosis', 'medications', 'last_visit_id']
    )

    for index, dictionary in enumerate(data):
        if not isinstance(dictionary, dict):
            print(f'Invalid format: expected a dictionary at position {index}.')
            is_invalid = True
            continue

        if set(dictionary.keys()) != key_set:
            print(
                f'Invalid format: {dictionary} at position {index} has missing and/or invalid keys.'
            )
            is_invalid = True
            continue

        invalid_records = find_invalid_records(**dictionary)

# User Editable Region

        for key in invalid_records:
            val = dictionary[key]
            index = list(dictionary.keys()).index(key)
            print(f"Unexpected format '{key}: {val}' at position {index}.")        
            is_invalid = True

# User Editable Region

    if is_invalid:
        return False
    print('Valid format.')
    return True

validate(medical_records)

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Challenge Information:

Build a Medical Data Validator - Step 44

2

test with invalid data, like

_test_data = [
  {'testing': 'stuff'},
  {
    'patient_id': 'P1003',
    'age': 29,
    'gender': 'emale',
    'diagnosis': 'Asthma',
    'medications': ['Albuterol'],
    'last_visit_id': 'V2303',
  },
  {'keep testing': 'stuff'},
  {
    'patient_id': '1003',
    'age': 29,
    'gender': 'female',
    'diagnosis': 'Asthma',
    'medications': 'Albuterol',
    'last_visit_id': 'V2303',
  },
]

validate(_test_data)

you give the wrong index, like your code says Unexpected format 'medications: Albuterol' at position 4. when there isn’t even something at index 4

3

The index in the return statement should be of the dictionary ‘element’ in the data list, and NOT the index of the key in your dictionary. That solves the problem.