解决问题：DMatrix parameter `enable_categorical` must be set to `True`

• 使用以下代码学习ml时，遇到这个问题

import pandas as pd
from sklearn.model_selection import train_test_split
from xgboost import XGBClassifier
from sklearn.metrics import accuracy_score
import sys

all_train=pd.read_csv('titanic/train.csv')
cols=['Survived', 'Pclass', 'Sex', 'Age', 'SibSp', 'Parch'</