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@ -352,9 +352,11 @@ Step 4: 将所有库存记录写入文件
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Step 5: 关闭文件
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Step 5: 关闭文件
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![](pictures/data.drawio.svg)
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![](pictures/data.drawio.svg)
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#### make_chart
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#### make_chart
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Step 1: 读取文件
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Step 1: 读取文件
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Step 2: 显示图表
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Step 2: 显示图表
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![](pictures/make_chart.drawio.svg)
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![](pictures/make_chart.drawio.svg)
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