我想从我的函数中返回两个不同的值。我如何重写代码以在两个不同的变量中返回这两个值
所以我得到了这个错误:
Traceback (most recent call last):
File "features.py", line 300, in <module>
fea1, fea2 = build_feature_matrix_S(sentences)
ValueError: too many values to unpack (expected 2)
这是密码
def build_feature_matrix_S(documents):
feature_type = ['frequency','tfdif']
#feature_type = feature_type.lower().strip()
for f in feature_type:
if feature_type == 'frequency':
vectorizer_freq = CountVectorizer(tokenizer = tokenize_lemmatize_spacy, binary=False, min_df=5, ngram_range=(1, 2))
feature_matrix_freq = vectorizer_freq.fit_transform(documents)
feature_freq = pd.DataFrame(feature_matrix_freq.todense(), columns = vectorizer_freq.get_feature_names())
return feature_freq
else:
vectorizer_tfidf = TfidfVectorizer(tokenizer = tokenize_lemmatize_spacy, min_df=5, ngram_range=(1, 2))
feature_matrix_tfidf = vectorizer_tfidf.fit_transform(documents)
feature_tfidf = pd.DataFrame(feature_matrix_tfidf.todense(), columns = vectorizer_tfidf.get_feature_names())
return feature_tfidf
fea1, fea2 = build_feature_matrix_S(sentences)
print(fea1, fea2)
在if、else语句中,只返回1个变量。您可以从如下函数中返回两个变量:
因此,您的函数可以写入如下内容:
在这方面,
python希望返回两个变量,一个元组,函数build_feature_matrix_S()中的两个返回语句都没有返回,返回的变量超过2个
或
这就是错误
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