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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def get_cert_file(name, cert_format=_DEFAULT_FORMAT, password=''):
    '''
    Get the details of the certificate file.

    :param str name: The filesystem path of the certificate file.
    :param str cert_format: The certificate format. Specify 'cer' for X.509, or
        'pfx' for PKCS #12.
    :param str password: The password of the certificate. Only applicable to pfx
        format. Note that if used interactively, the password will be seen by all minions.
        To protect the password, use a state and get the password from pillar.

    :return: A dictionary of the certificate thumbprints and properties.
    :rtype: dict

    CLI Example:

    .. code-block:: bash

        salt '*' win_pki.get_cert_file name='C:\\certs\\example.cer'
    '''
    ret = dict()
    cmd = list()
    blacklist_keys = ['DnsNameList']
    cert_format = cert_format.lower()

    _validate_cert_format(name=cert_format)

    if not name or not os.path.isfile(name):
        _LOG.error('Path is not present: %s', name)
        return ret

    if cert_format == 'pfx':
        if password:
            cmd.append('$CertObject = New-Object')
            cmd.append(' System.Security.Cryptography.X509Certificates.X509Certificate2;')
            cmd.append(r" $CertObject.Import('{0}'".format(name))
            cmd.append(",'{0}'".format(password))
            cmd.append(",'DefaultKeySet') ; $CertObject")
            cmd.append(' | Select-Object DnsNameList, SerialNumber, Subject, '
                    'Thumbprint, Version')
        else:
            cmd.append(r"Get-PfxCertificate -FilePath '{0}'".format(name))
            cmd.append(' | Select-Object DnsNameList, SerialNumber, Subject, '
                    'Thumbprint, Version')
    else:
        cmd.append('$CertObject = New-Object')
        cmd.append(' System.Security.Cryptography.X509Certificates.X509Certificate2;')
        cmd.append(r" $CertObject.Import('{0}'); $CertObject".format(name))
        cmd.append(' | Select-Object DnsNameList, SerialNumber, Subject, '
                   'Thumbprint, Version')

    items = _cmd_run(cmd=six.text_type().join(cmd), as_json=True)

    for item in items:
        for key in item:
            if key not in blacklist_keys:
                ret[key.lower()] = item[key]

        ret['dnsnames'] = [name['Unicode'] for name in item['DnsNameList']]

    if ret:
        _LOG.debug('Certificate thumbprint obtained successfully: %s', name)
    else:
        _LOG.error('Unable to obtain certificate thumbprint: %s', name)
    return ret