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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 table_present(name, db, schema, force=False):
    '''
    Make sure the specified table exists with the specified schema

    name
        The name of the table

    db
        The name of the database file

    schema
        The dictionary containing the schema information

    force
        If the name of the table exists and force is set to False,
        the state will fail.  If force is set to True, the existing
        table will be replaced with the new table
    '''
    changes = {'name': name,
               'changes': {},
               'result': None,
               'comment': ''}
    conn = None
    try:
        conn = sqlite3.connect(db, detect_types=sqlite3.PARSE_DECLTYPES)
        tables = _query(conn,
                        "SELECT sql FROM sqlite_master " +
                        "WHERE type='table' AND name=?", [name])

        if len(tables) == 1:
            sql = None
            if isinstance(schema, six.string_types):
                sql = schema.strip()
            else:
                sql = _get_sql_from_schema(name, schema)

            if sql != tables[0][0]:
                if force:
                    if __opts__['test']:
                        changes['result'] = True
                        changes['changes']['old'] = tables[0][0]
                        changes['changes']['new'] = sql
                        changes['comment'] = "'" + name + "' will be replaced"
                    else:
                        conn.execute("DROP TABLE `" + name + "`")
                        conn.execute(sql)
                        conn.commit()
                        changes['result'] = True
                        changes['changes']['old'] = tables[0][0]
                        changes['changes']['new'] = sql
                        changes['comment'] = "Replaced '" + name + "'"
                else:
                    changes['result'] = False
                    changes['comment'] = "Expected schema=" + sql + \
                                         "\nactual schema=" + tables[0][0]
            else:
                changes['result'] = True
                changes['comment'] = "'" + name + \
                                     "' exists with matching schema"
        elif not tables:
            # Create the table
            sql = None
            if isinstance(schema, six.string_types):
                sql = schema
            else:
                sql = _get_sql_from_schema(name, schema)
            if __opts__['test']:
                changes['result'] = True
                changes['changes']['new'] = sql
                changes['comment'] = "'" + name + "' will be created"
            else:
                conn.execute(sql)
                conn.commit()
                changes['result'] = True
                changes['changes']['new'] = sql
                changes['comment'] = "Created table '" + name + "'"
        else:
            changes['result'] = False
            changes['comment'] = 'Multiple tables with the same name=' + name

    except Exception as e:
        changes['result'] = False
        changes['comment'] = str(e)

    finally:
        if conn:
            conn.close()

    return changes