| name | multi-file-excel-parquet-analysis |
| description | 读取多 Sheet Excel 文件并统计规模,支持大文件向 Parquet 格式转换、分类数据统计及可视化报告生成。 |
Note: This sub-skill covers one step of the Excel analysis workflow. For the full pipeline (file reading, row counting, large-file optimization, export), see the parent workflow SKILL.md.
Step1 读取 Excel 文件,遍历所有 Sheet 统计行数,评估数据规模。
import pandas as pd
import os
file_path = "input_data.xlsx"
if not os.path.exists(file_path):
print(f"Error: 文件 {file_path} 不存在")
else:
xl = pd.ExcelFile(file_path)
sheet_names = xl.sheet_names
print("Sheet 列表:", sheet_names)
total_rows = 0
for sheet in sheet_names:
df_tmp = pd.read_excel(file_path, sheet_name=sheet, usecols=[0])
row_count = len(df_tmp)
total_rows += row_count
print(f"Sheet: {sheet}, 行数: {row_count}")
print(f"总行数汇总: {total_rows}")
Step2 读取转换后的数据,执行分类统计分析,计算频数与占比。
import pandas as pd
df_analyzed = pd.read_parquet(output_parquet)
target_col = '剪裁结果'
if target_col in df_analyzed.columns:
counts = df_analyzed[target_col].value_counts()
percent = df_analyzed[target_col].value_counts(normalize=True) * 100
summary_df = pd.DataFrame({
'分类': counts.index,
'数量': counts.values,
'占比(%)': percent.values.round(2)
})
total_row = pd.DataFrame([['总计', summary_df['数量'].sum(), 100.0]], columns=summary_df.columns)
summary_df = pd.concat([summary_df, total_row], ignore_index=True)
print("统计摘要:\n", summary_df)
else:
print(f"未找到目标列: {target_col}")
Step3 生成可视化饼图并保存分析报告,提供结果下载链接。
import matplotlib.pyplot as plt
plt.rcParams['font.sans-serif'] = ['SimHei', 'DejaVu Sans']
plt.rcParams['axes.unicode_minus'] = False
if target_col in df_analyzed.columns:
plt.figure(figsize=(10, 7), dpi=100)
plot_data = df_analyzed[target_col].value_counts()
plt.pie(plot_data, labels=plot_data.index, autopct='%1.1f%%', startangle=90, colors=plt.cm.Paired.colors)
plt.title(f'{target_col} 分布占比')
chart_output = "analysis_pie_chart.png"
plt.savefig(chart_output, bbox_inches='tight')
report_output = "analysis_report.xlsx"
summary_df.to_excel(report_output, index=False)
print(f"分析图表已保存: {chart_output}")
print(f"统计表格已保存: {report_output}")
print(f"下载链接: {os.path.abspath(report_output)}")