Reading a list of lists from a file as list of lists in python

Question

I collected data in the form of list of lists and wrote the data into a text file. The data in the text file looks like

[[123231,2345,888754],[223467,85645]         


        

Answer 1

Also you can use eval to achieve this, but the other solutions maybe better:

# reading a list from a file
f = open('data.txt', 'r')
l = eval(f.read())

# storing a list to a file
outf = open('out','w')
outf.write(str(l))

Sometime using eval is a bad practice. For more information check this post.