TypeError: object of type 'int' has no len() when converting list of tuples to pandas data frame

Question

I have a list of tuples like this

tmp
[('chr19', 50003781, '+', 5303232448),
 ('chr19', 58856544, '+', 5303232448),
 ('chr19', 58856544, '+', 5303232448),
 ('chr10', 52559169, '+', 12460988980),
...]

and I have been following many answers from StackOverflow to convert this into a pandas data frame. Basically I need this

col1    col2      col3     col4
chr19   50003781.  +     5303232448

When I tried to do that with for example this

df = pd.DataFrame(tmp, columns=["col1", "col2", "col3","col4])

I got this error

TypeError: object of type 'int' has no len()

Why?

user7864386 · Accepted Answer · 2022-02-06 19:27:08Z

2

That means, tmp is not a list of tuples, there is an integer in it.

For example,

tmp = [('chr19', 50003781, '+', 5303232448),
 ('chr19', 58856544, '+', 5303232448),
 ('chr19', 58856544, '+', 5303232448),
 ('chr10', 52559169, '+', 12460988980), 1]

will give the same error. See if

any(isinstance(t, int) for t in tmp)

is True or not. If True it means there is an integer value in tmp. In that case, you probably want to filter it out when passing tmp to the DataFrame constructor.

answered Feb 6, 2022 at 19:27

user7864386

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

TypeError: object of type 'int' has no len() when converting list of tuples to pandas data frame

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related