Passing something other than list to extract_text results in error

[alexreg]

Describe the bug

This exception is raised when calling pdfplumber.utils.extract_text and passing a chars object that is an iterator (with no __len__ attribute).

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

Code to reproduce the problem

pdfplumber.utils.extract_text(chars_iterator_obj)

Expected behavior

No error; chars_iterator_obj should get converted to list.

Actual behavior

Error is raised.

Environment

• pdfplumber version: 0.5.27
• Python version: 3.9.2
• OS: all

[jsvine]

I believe #385 fixes this and is merged, so closing this issue. Thanks @alexreg!