python - 如何在图表区的 Python-pptx 图表中为图表提供图表标题(不是幻灯片标题)

Question

我正在尝试将文本添加到 PPT 幻灯片图表区域的图表标题(不是幻灯片标题)。我有 http://python-pptx.readthedocs.io/en/latest/dev/analysis/cht-chart-title.html如果可以将任何文本添加到我的图表但我找不到解决方案，请使用此链接。这是我的，

import numpy as np
import pandas as pd
import pyodbc
#import pptx as ppt 
import matplotlib.pyplot as plt
from pptx import Presentation
from pptx.chart.data import ChartData
from pptx.chart.data import XyChartData
from pptx.enum.chart import XL_CHART_TYPE
from pptx.util import Inches,Pt
from pptx.enum.chart import XL_LABEL_POSITION
from pptx.dml.color import RGBColor
from pptx.dml import fill
from pptx.chart.chart import ChartTitle
from pptx.chart.chart import Chart



cnxn = pyodbc.connect("Driver={SQL Server Native Client 11.0};"
                        "Server=SNAME;"
                        "Database=DNAME;"
                        "Trusted_Connection=yes;")
AvgResponseTimequery = 'EXEC [SLA].[MONTHWISEREPORT]'
df=pd.read_sql(sql=AvgResponseTimequery,con=cnxn)
#df




getprs = Presentation('D:\SLA Pyth\hubiC-06-20-2017 1_10_55\SLAPerformance.pptx')
slide = getprs.slides.add_slide(getprs.slide_layouts[5])
slide.shapes.title.text = 'Key Performance KPIs'

chart_data = ChartData()
chart_data.categories = df['Month'].values.tolist()
chart_data.add_series('Average Report Response time(Seconds)', tuple(df['Avg Response Time']))
x, y, cx, cy = Inches(0.5), Inches(2), Inches(9), Inches(3)

chart=slide.shapes.add_chart(
    XL_CHART_TYPE.COLUMN_CLUSTERED, x, y, cx, cy, chart_data
).chart

#chart.has_title = True
#Chart.chart_title = "Response Time in Seconds"  #Tried to add text here, I didnt get any error though
#ChartTitle.has_text_frame = True


chart.has_title = True
chart.chart_title = "Response Time in Seconds"
# Check the has_text_frame property of this chart's chart_title:
print(chart.has_text_frame)



plot = chart.plots[0]
plot.has_data_labels = True
data_labels = plot.data_labels

chart.series[0].format.fill.solid()
chart.series[0].format.fill.fore_color.rgb = RGBColor(46, 125, 137)

getprs.save('D:\SLA REPORT MONTH WISE\SALReport1.pptx')

Answer 1

可能有错别字，区分大小写。当您执行 Chart.chart_title 时，您指的是 class Chart 而不是您的 chart 对象。同样，ChartTitle.has_text_frame 指的是类 ChartTitle 而不是您的图表!

安装此 pptx 包并调试后(chart.has_title 等出现错误)，我认为您需要:

chart.chart_title.has_text_frame=True
chart.chart_title.text_frame.text='Response Time in Seconds'

注意:你不需要这一行:

chart.chart_title.has_text_frame=True

设置 text_frame.text 就足够了。

这是我用来测试的确切代码。首先，创建一个只有一张幻灯片的新演示文稿。从该幻灯片中删除所有形状/占位符并仅插入 1 个图表。保存并关闭演示文稿。

from pptx import Presentation
from pptx.chart.data import ChartData
from pptx.chart.data import XyChartData
from pptx.enum.chart import XL_CHART_TYPE
from pptx.util import Inches,Pt
from pptx.enum.chart import XL_LABEL_POSITION
from pptx.dml.color import RGBColor
from pptx.dml import fill
from pptx.chart.chart import ChartTitle
from pptx.chart.chart import Chart

file = 'c:\debug\pres.pptx'
pres = Presentation(file)
slide = pres.slides[0]
chart = slide.shapes[0].chart
chart.chart_title.text_frame.text='my new chart title'
pres.save(file)

此外，从控制台，我看到这些类型，表明 chart.chart_title 不是 str 对象的实例，等等:

>>> type(chart)
<class 'pptx.chart.chart.Chart'>
>>> type(chart.chart_title)
<class 'pptx.chart.chart.ChartTitle'>

请注意，the documentation indicates :

Currently python-pptx requires Python 2.6, 2.7, 3.3 or 3.4.

如果您使用的是 python 3.6，那么也许这就是它无法按预期工作的原因，它不受支持的 python 版本。