# 使用 Python 在 PPTX 演示文件中创建图表

> Python 源代码，用于在 PPTX 演示文稿中创建图表。

Source: https://products.aspose.com/slides/zh/python-net/chart/pptx/
Updated: 2023-06-01



## 通过 Python 将饼图添加到 PPTX 演示文稿

饼图用于显示数据中部分与整体的关系，尤其是当数据包含带有数值的分类标签时。 Aspose.Slides for Python via .NET 提供了一个强大的 API，用于在 PowerPoint 演示文稿中创建饼图。您可以在此 [链接](https://docs.aspose.com/slides/python-net/pie-chart/) 中找到有关使用 Aspose.Slides for Python API 自定义饼图的更多信息。

### 以下代码示例显示了如何在 Python 的 PowerPoint PPTX 中创建饼图。

```py

import aspose.slides as slides
import aspose.pydrawing as drawing

# Create presentation (or load existing one)
with slides.Presentation() as presentation:

    # Access first slide
    slide = presentation.slides[0]

    # Add chart with default data
    chart = slide.shapes.add_chart(slides.charts.ChartType.PIE, 100, 100, 400, 400)

    # Set chart title
    chart.chart_title.add_text_frame_for_overriding("Sample Title")
    chart.chart_title.text_frame_for_overriding.text_frame_format.center_text = slides.NullableBool(True)
    chart.chart_title.height = 20
    chart.has_title = True

    # Set first series to show values
    chart.chart_data.series[0].labels.default_data_label_format.show_value = True

    # Set the index of chart data sheet
    defaultWorksheetIndex = 0

    # Get the chart data worksheet
    fact = chart.chart_data.chart_data_workbook

    # Delete default generated series and categories
    chart.chart_data.series.clear()
    chart.chart_data.categories.clear()

    # Add new categories
    chart.chart_data.categories.add(fact.get_cell(0, 1, 0, "First Qtr"))
    chart.chart_data.categories.add(fact.get_cell(0, 2, 0, "2nd Qtr"))
    chart.chart_data.categories.add(fact.get_cell(0, 3, 0, "3rd Qtr"))

    # Add new series
    series = chart.chart_data.series.add(fact.get_cell(0, 0, 1, "Series 1"), chart.type)

    # Populate series data
    series.data_points.add_data_point_for_pie_series(fact.get_cell(defaultWorksheetIndex, 1, 1, 20))
    series.data_points.add_data_point_for_pie_series(fact.get_cell(defaultWorksheetIndex, 2, 1, 50))
    series.data_points.add_data_point_for_pie_series(fact.get_cell(defaultWorksheetIndex, 3, 1, 30))

    # Add new points and set sector color
    chart.chart_data.series_groups[0].is_color_varied = True

    point = series.data_points[0]
    point.format.fill.fill_type = slides.FillType.SOLID
    point.format.fill.solid_fill_color.color = drawing.Color.orange

    # Set sector border
    point.format.line.fill_format.fill_type = slides.FillType.SOLID
    point.format.line.fill_format.solid_fill_color.color = drawing.Color.gray
    point.format.line.width = 3.0

    point1 = series.data_points[1]
    point1.format.fill.fill_type = slides.FillType.SOLID
    point1.format.fill.solid_fill_color.color = drawing.Color.blue_violet

    # Set sector border
    point1.format.line.fill_format.fill_type = slides.FillType.SOLID
    point1.format.line.fill_format.solid_fill_color.color = drawing.Color.blue
    point1.format.line.width = 3.0
    # point1.format.line.style = slides.LineStyle.SINGLE
    # point1.format.line.dash_style = slides.LineDashStyle.LARGE_DASH_DOT

    point2 = series.data_points[2]
    point2.format.fill.fill_type = slides.FillType.SOLID
    point2.format.fill.solid_fill_color.color = drawing.Color.yellow_green

    # Set sector border
    point2.format.line.fill_format.fill_type = slides.FillType.SOLID
    point2.format.line.fill_format.solid_fill_color.color = drawing.Color.red
    point2.format.line.width = 2.0
    # point2.format.line.style = slides.LineStyle.THIN_THIN
    # point2.format.line.dash_style = slides.LineDashStyle.LARGE_DASH_DOT_DOT

    # Create custom labels for each of categories for new series
    lbl1 = series.data_points[0].label

    # lbl.show_category_name = True
    lbl1.data_label_format.show_value = True

    lbl2 = series.data_points[1].label
    lbl2.data_label_format.show_value = True
    lbl2.data_label_format.show_legend_key = True
    lbl2.data_label_format.show_percentage = True

    lbl3 = series.data_points[2].label
    lbl3.data_label_format.show_series_name = True
    lbl3.data_label_format.show_percentage = True

    # Show leader lines for chart
    # series.labels.default_data_label_format.show_leader_lines = True

    # Set rotation angle for pie chart sectors
    chart.chart_data.series_groups[0].first_slice_angle = 180

    # Save presentation
    presentation.save("pie-chart.pptx", slides.export.SaveFormat.PPTX)

```

## 如何通过 Python 在 PPTX 中创建和自定义饼图

这些是将饼图添加到 PPTX 文件的步骤。

首先，创建一个 PPTX Presentation 类的实例。

使用 add_chart(...) 方法添加一个带有默认数据的饼图。

配置饼图的必要属性（设置图表标题，修改图表数据，将格式应用于系列和类别）

以 PPTX 格式保存结果

## 其他支持的格式