Initial commit: skills library

- 70 skills with code and documentation
- Add .gitignore (ignore __pycache__, output/, temp/, venv/)
- Clean up test intermediates and caches

multi-source-stock-query/tools/convert_xls_to_xlsx.py

@@ -0,0 +1,38 @@
+import pandas as pd
+import sys
+import os
+
+
+def convert_xls_to_xlsx(xls_file, xlsx_file=None):
+    """将.xls文件转换为.xlsx文件"""
+    if not xlsx_file:
+        xlsx_file = os.path.splitext(xls_file)[0] + ".xlsx"
+
+    try:
+        # 尝试使用xlrd读取.xls文件
+        df = pd.read_excel(xls_file, engine="xlrd")
+
+        # 保存为.xlsx格式
+        df.to_excel(xlsx_file, index=False)
+
+        print(f"成功转换: {xls_file} -> {xlsx_file}")
+        print(f"数据形状: {df.shape}")
+        print("前几行预览:")
+        print(df.head())
+
+        return True
+
+    except Exception as e:
+        print(f"转换失败: {e}")
+        return False
+
+
+if __name__ == "__main__":
+    if len(sys.argv) < 2:
+        print("用法: python convert_xls_to_xlsx.py <input.xls> [output.xlsx]")
+        sys.exit(1)
+
+    input_file = sys.argv[1]
+    output_file = sys.argv[2] if len(sys.argv) > 2 else None
+
+    convert_xls_to_xlsx(input_file, output_file)