Python-Pie chart in reportlabs

Question

I\'m referring this link for generation of Pie Chart. In this the colors are pre-defined for each data, ie 10 colors for 10 data points. What if I have 11 data points and then t

Answer 1

I know it's kind of late to be answering, but in case someone else has the same problem, here is what worked for me:

At the start of the code you write:

from reportlab.lib.colors import HexColor
pdf_chart_colors = [
    HexColor("#0000e5"),
    HexColor("#1f1feb"),
    HexColor("#5757f0"),
    HexColor("#8f8ff5"),
    HexColor("#c7c7fa"),
    HexColor("#f5c2c2"),
    HexColor("#eb8585"),
    HexColor("#e04747"),
    HexColor("#d60a0a"),
    HexColor("#cc0000"),
    HexColor("#ff0000"),
    ]

You can change the color codes to get any color you like, some examples: http://www.creativecolorschemes.com/resources/free-color-schemes/beautiful-color-scheme.shtml

And when generating the pie chart you only need to add two lines at the end:

def piechart(Values, Names):        
    d = Drawing(100, 125)
    cht = Pie()
    ...
    n = len(cht.data)
    setItems(n,cht.slices,'fillColor',pdf_chart_colors)

Where setItems has been previously defined as:

def setItems(n, obj, attr, values):
m = len(values)
i = m // n
for j in xrange(n):
    setattr(obj[j],attr,values[j*i % m])

Use this link (last pie chart example) for extra ereference: http://m.blog.csdn.net/blog/wdt3385/10142163