fix bug

src/skill_tree/init.py

+import os
+from .tree import load_json, dump_json
+
+
+def init_dir(tree_name):
+    tree = load_json('data/tree_simple.json')
+
+    level_0 = tree['level']['level_0']
+    level_1 = tree['level']['level_1']
+    level_2 = tree['level']['level_2']
+    tree = tree['tree']
+
+    init_level(tree, level_0, f'data/1.{tree_name}初阶')
+    init_level(tree, level_1, f'data/2.{tree_name}中阶')
+    init_level(tree, level_2, f'data/3.{tree_name}高阶')
+
+
+def init_level(tree, level, root):
+    chapter_i = 1
+    for chapter in level:
+        sections = tree[chapter]
+
+        chapter_dir = os.path.join(root, f'{chapter_i}.{chapter}')
+        os.makedirs(chapter_dir, exist_ok=True)
+
+        section_i = 1
+        for section in sections:
+            section_dir = os.path.join(chapter_dir, f'{section_i}.{section}')
+            os.makedirs(section_dir, exist_ok=True)
+            section_i += 1
+
+        chapter_i += 1

src/skill_tree/tree.py

@@ -521,7 +521,7 @@ class TreeWalker:
 
         with open('requirements.txt', 'w', encoding='utf-8') as f:
             f.write('\n'.join([
-                ".pre_commit",
+                "pre_commit",
                 "skill-tree-parser",
             ]))
 
@@ -659,6 +659,7 @@ class TreeWalker:
             f'* 合成过程中，会自动检查每个知识点目录下 `config.json` 里的 `export` 里导出的习题配置，检查是否存在`exercise_id` 字段，如果不存在则生成',
             f'* 在 节 目录下根据需要，可以添加一些子目录用来测试代码。',
             f'* 开始游戏入门技能树构建之旅，GoodLuck! ',
+            f'',
             f'## FAQ',
             f'',
             f'**难度目录是固定的么？**',