input_texts = [] target_texts = [] input_characters = set() target_characters = set() with open(data_path, 'r', encoding='utf-8') as f: lines = f.read().split('\n') if len(lines) < num_samples: num_samples = len(lines) - 1 for line in lines[:num_samples]: try: input_text, target_text = line.split('\t') target_text = '\t' + target_text + '\n' input_texts.append(input_text) target_texts.append(target_text) for char in input_text.strip(): input_characters.add(char) for char in target_text.strip(): target_characters.add(char) except ValueError: pass input_characters = sorted(list(input_characters)) target_characters = sorted(list(target_characters)) num_encoder_tokens = len(input_characters) num_decoder_tokens = len(target_characters) max_encoder_seq_length = max([len(txt.strip()) for txt in input_texts]) max_decoder_seq_length = max([len(txt.strip()) for txt in target_texts])在上面代码加一个条件判断，判断input text是不是空，如果是空就返回其他，如果不是空再返回那个max等式

可以按照以下方式添加条件判断：

input_texts = []
target_texts = []
input_characters = set()
target_characters = set()
with open(data_path, 'r', encoding='utf-8') as f:
    lines = f.read().split('\n')
    if len(lines) < num_samples:
        num_samples = len(lines) - 1
    for line in lines[:num_samples]:
        try:
            input_text, target_text = line.split('\t')
            target_text = '\t' + target_text + '\n'
            if input_text.strip() == "":
                continue  # 如果input text是空，跳过本次循环
            input_texts.append(input_text)
            target_texts.append(target_text)
            for char in input_text.strip():
                input_characters.add(char)
            for char in target_text.strip():
                target_characters.add(char)
        except ValueError:
            pass

if not input_texts:
    print("No valid input texts found.")
else:
    input_characters = sorted(list(input_characters))
    target_characters = sorted(list(target_characters))
    num_encoder_tokens = len(input_characters)
    num_decoder_tokens = len(target_characters)
    max_encoder_seq_length = max([len(txt.strip()) for txt in input_texts])
    max_decoder_seq_length = max([len(txt.strip()) for txt in target_texts])

这样，在 input_texts 中没有有效的 input text 时，就会输出 "No valid input texts found." 的提示。