How do I encode string values in pytorch?

df_train.head():
  country            league        home_team   away_team  home_odds  draw_odds  away_odds  home_score  away_score  dow  month
0  Brazil  Copa do Nordeste     Sport Recife  Imperatriz       1.36       4.31       7.66           2           2    4      2
1  Brazil  Copa do Nordeste              ABC  America RN       2.62       3.30       2.48           2           1    6      2
2  Brazil  Copa do Nordeste  Frei Paulistano     Nautico       5.19       3.58       1.62           0           2    6      2
3  Brazil  Copa do Nordeste      Botafogo PB   Confianca       2.06       3.16       3.50           1           1    6      2
4  Brazil  Copa do Nordeste        Fortaleza       Ceara       2.19       2.98       3.38           1           1    6      2

df_test.shape:
(76544, 11)
df_test.head()
     country          league      home_team      away_team  home_odds  draw_odds  away_odds  home_score  away_score  dow  month
0      World   Club Friendly       Westerlo           Gent       2.93       3.47       2.19         NaN         NaN    4      6
1   Malaysia    Super League       Johor DT       Selangor       1.27       5.59       8.26         NaN         NaN    4      6
2  Argentina  Reserve League        Lanus 2  River Plate 2       2.54       3.12       2.65         NaN         NaN    4      6
3       Asia         AFC Cup    Bali United          Kedah       1.58       4.08       4.93         NaN         NaN    4      6
4   Ethiopia  Premier League  Defence Force     Adama City       2.93       2.16       3.38         NaN         NaN    4      6

df_test.shape:
(599, 11)

I perform encoding in sklearn using pandas as:

def encode_features(df_train, df_test):
    features = ['country', 'league', 'home_team', 'away_team']
    df_combined = pd.concat([df_train[features], df_test[features]])

    for feature in features:
        le = preprocessing.LabelEncoder()
        le = le.fit(df_combined[feature])
        df_train[feature] = le.transform(df_train[feature])
        df_test[feature] = le.transform(df_test[feature])
    return df_train, df_test


df_train, df_test = encode_features(df_train, df_test)

What is the best way to encode string values using pytorch?