modify scripts

src/sample/yh_finace.py

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+import yfinance as yf
+
+# 创建一个 Ticker 对象来表示苹果公司
+apple = yf.Ticker("PDD")
+
+# 获取季度利润表
+quarterly_income_stmt = apple.quarterly_income_stmt
+print("季度利润表:")
+print(quarterly_income_stmt)
+
+# 获取季度资产负债表
+quarterly_balance_sheet = apple.get_balance_sheet(freq="quarterly")
+print("\n季度资产负债表:")
+print(quarterly_balance_sheet)
+
+# 获取季度现金流量表
+quarterly_cashflow = apple.quarterly_cashflow
+print("\n季度现金流量表:")
+print(quarterly_cashflow)
+
+# 获取关键财务指标示例：获取市盈率（PE Ratio）
+info = apple.info
+pe_ratio = info.get('trailingPE')
+print(f"\n市盈率 (PE Ratio): {pe_ratio}")