data structure for python and reportlabs charts

Question

Admittedly I think I may be stumped because i can't figure out how to describe my problem so I can effectively google it...

in short the report lab horizontal line chart I'm trying to create works when I assign data to my list variable when I build it like this:

data=[(55,56,57,58)] 

or (after carefully reading the report lab documentation for a single series chart data=[(55,56,57,58),]

However, the lists that i'm building in my python code come out like the this data=[55, 56, 57, 58]

So what is the difference between [#, #, #] and [(#, #, #)]

Answer 1

• [#,#,#] is a list
• (#,#,#) is a tuple
• [(#,#,#)] is a (one element) list of a tuple