a = ((), (), (5, 5, 5), (), (3), (), ())
[list(x) for x in a]

Expected output [[], [], [5, 5, 5], [], [3], [], []] but got

TypeError: 'int' object is not iterable

CodePudding user response：

What you have is not a tuple.

Use (3,) instead of (3) to create a tuple, otherwise Python thinks it's an expression and returns 3.

CodePudding user response：

You are missing a comma in (3). The correct code would be:

a = ((), (), (5, 5, 5), (), (3,), (), ())
[list(x) for x in a]

CodePudding user response：

I tried a = ((), (), (5, 5, 5), (), (3), (), ()) [tuple(x) for x in a]

I got TypeError: 'int' object is not iterable. Is there a method to convert it to (3,)?