# Crear un Validador de Datos Médicos - Paso 13

**URL:** <https://forum.freecodecamp.org/t/crear-un-validador-de-datos-medicos-paso-13/782096>\
**Category:** General\
**Tags:** español\
**Created:** [March 11, 2026, 5:45pm UTC](https://forum.freecodecamp.org/t/crear-un-validador-de-datos-medicos-paso-13/782096 "2026-03-11T17:45:58Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![joisvethrm](https://sea3.discourse-cdn.com/freecodecamp/user_avatar/forum.freecodecamp.org/joisvethrm/32/371307_2.png) [@joisvethrm](https://forum.freecodecamp.org/u/joisvethrm)\
**Post date:** [March 11, 2026, 5:45pm UTC](https://forum.freecodecamp.org/t/crear-un-validador-de-datos-medicos-paso-13/782096/1 "2026-03-11T17:45:58Z")

</div>

### Cuéntanos qué está pasando:

Debes convertir tu lista medical\_recordsen una cadena…  
esto es lo que me dice ya en mi codigo pude ver en la consola el comentario que me dice este ejercicio y no poedo ver el error

### Tu código hasta el momento

```py

# User Editable Region

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',
    }
]

# User Editable Region

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

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

validate(str(medical_records))

```

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### Información del Desafío:

Crear un Validador de Datos Médicos - Paso 13

> **[freeCodeCamp.org](https://www.freecodecamp.org/espanol/learn/python-v9/workshop-medical-data-validator/step-13)**
>
> Aprende a programar, ¡GRATIS!

---

<div class="post-metadata">

**Author:** ![dhess](https://sea3.discourse-cdn.com/freecodecamp/user_avatar/forum.freecodecamp.org/dhess/32/406235_2.png) [@dhess](https://forum.freecodecamp.org/u/dhess)\
**Post date:** [March 11, 2026, 6:06pm UTC](https://forum.freecodecamp.org/t/crear-un-validador-de-datos-medicos-paso-13/782096/2 "2026-03-11T18:06:16Z")

</div>

Welcome to the forum @joisvethrm !

The purpose of this step is to show what happens if the value passed to the `validate` function is not a list or tuple.

To do that, you are asked to turn `medical_records` into a string.

You can do that by surrounding the brackets (] with triple quotes for a multi-line string.

See this theory lecture for an example of that syntax:

[Introduction to Strings - What Are Strings and What Is String Immutability? | Learn | freeCodeCamp.org](https://www.freecodecamp.org/learn/python-v9/lecture-introduction-to-python-strings/what-are-strings-and-what-is-string-immutability)

Happy coding!

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<div class="post-metadata">

**Author:** ![system](https://global.discourse-cdn.com/freecodecamp/original/3X/e/1/e1c433102e34b46dfaa3e15d13ab9a514b127078.svg) [@system](https://forum.freecodecamp.org/u/system)\
**Post date:** [April 8, 2026, 6:06pm UTC](https://forum.freecodecamp.org/t/crear-un-validador-de-datos-medicos-paso-13/782096/3 "2026-04-08T18:06:45Z")

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