style(hus):add new chapter and new question

llmriddles/questions/__init__.py

@@ -1,7 +1,9 @@
 from .executor import QuestionExecutor
 from .level1 import __file__ as _level1_file_
 from .level3 import __file__ as _level3_file_
+from .level4 import __file__ as _level4_file_
 from .question import Question, register_question, list_ordered_questions
 
 _ = _level1_file_
 _ = _level3_file_
+_ = _level4_file_

llmriddles/questions/level4.py

@@ -0,0 +1,56 @@
+from .question import register_question
+
+def count_words(text: str, contain_punctuation: bool = False):
+    chinese_words = []
+    english_words = []
+    other_words = []
+    temp_english_words = []
+    for char in text:
+        if '\u4e00' <= char <= '\u9fff':
+            chinese_words.append(char)
+            if len(temp_english_words) > 0:
+                english_words.append(''.join(temp_english_words))
+                temp_english_words = []
+        else:
+            if char.isalpha():
+                temp_english_words.append(char)
+            else:
+                if len(temp_english_words) > 0:
+                    english_words.append(''.join(temp_english_words))
+                    temp_english_words = []
+                other_words.append(char)
+    if contain_punctuation:
+        return len(chinese_words)+len(english_words)+len(other_words)
+    else:
+        return len(chinese_words)+len(english_words)
+
+CN_TEXT_1 = """
+第四章第一题（口是心非）请构造一个不少于十个字的问题，使得回答中不包含问题中的任意字符。
+
+请在下面的输入框内填写你的提问并点击按钮提交。
+"""
+
+EN_TEXT_1 = """
+For the first question in chapter 3, Please construct a question of no less than ten words so that the answer does not contain any of the characters in the question.
+
+Please enter your query below and click the submit button
+"""
+
+def _checker_1(question_text: str, user_text: str, answer_text: str, lang: str):
+    _ = question_text, lang
+    answer_text = answer_text.strip()
+    user_text = user_text.strip()
+
+    if count_words(user_text) < 10:
+        return False, "用户的问题长度应该至少10个字" if lang=='cn' else 'Question should be no less than 10 words.'
+
+    if answer_text == user_text:
+        return True, None
+    else:
+        return False, None
+
+register_question({
+    'cn': CN_TEXT_1,
+    'en': EN_TEXT_1,
+}, _checker_1, level=4)
+