Question

it’s really frustrating: I just stored some data rows containing lists after a long long calculation in a csv file.
I am unable to get the csv data back into variable.
Its more precise a row like

pete; [1,2,3,4,5]; [(1,2),(3,4),(5,6),…]

Sure, Python csv parses to a string :/,
thus, if I try the list()-casting, it’s like:

list("[(1,2),(3,4)]") = ['[','(','1',',',...]

Do you have any idea to cope with this?

thought I could use:

for name,list,lTuples in csvfile:

…

Thanks a lot!

Answer 1

You can use ast.literal_eval (as long as the string contains only strings, numbers, tuples, lists, dicts, booleans, and None).

>>> import ast
>>> ast.literal_eval("[(1,2),(3,4)]")
[(1, 2), (3, 4)]