def compute_space_width(
    ft: DictionaryObject, space_code: int, space_width: float
) -> float:
    sp_width: float = space_width * 2.0  # default value
    w = []
    w1 = {}
    st: int = 0
    if "/DescendantFonts" in ft:  # ft["/Subtype"].startswith("/CIDFontType"):
        ft1 = ft["/DescendantFonts"][0].get_object()  # type: ignore
        try:
            w1[-1] = cast(float, ft1["/DW"])
        except Exception:
            w1[-1] = 1000.0
        if "/W" in ft1:
            w = list(ft1["/W"])
        else:
            w = []
        while len(w) > 0:
            # st = w[0]
            # above commented out line is the original, below is my edit:
            st = w[0] if isinstance(w[0], int) else w[0].get_object()
            second = w[1].get_object()
            if isinstance(second, int):
                for x in range(st, second):
                    w1[x] = w[2]
                w = w[3:]
            elif isinstance(second, list):
                for y in second:
                    w1[st] = y
                    st += 1
                w = w[2:]
            else:
                logger_warning(
                    "unknown widths : \n" + (ft1["/W"]).__repr__(),
                    __name__,
                )
                break
        try:
            sp_width = w1[space_code]
        except Exception:
            sp_width = (
                w1[-1] / 2.0
            )  # if using default we consider space will be only half size
    elif "/Widths" in ft:
        w = list(ft["/Widths"])  # type: ignore
        try:
            st = cast(int, ft["/FirstChar"])
            en: int = cast(int, ft["/LastChar"])
            if st > space_code or en < space_code:
                raise Exception("Not in range")
            if w[space_code - st] == 0:
                raise Exception("null width")
            sp_width = w[space_code - st]
        except Exception:
            if "/FontDescriptor" in ft and "/MissingWidth" in cast(
                DictionaryObject, ft["/FontDescriptor"]
            ):
                sp_width = ft["/FontDescriptor"]["/MissingWidth"]  # type: ignore
            else:
                # will consider width of char as avg(width)/2
                m = 0
                cpt = 0
                for x in w:
                    if x > 0:
                        m += x
                        cpt += 1
                sp_width = m / max(1, cpt) / 2
    return sp_width

import pypdf

f_path = "data/Morris et al. - 2020 - TextAttack A Framework for Adversarial Attacks, Data Augmentation, and Adversarial Training in NLP.pdf"
with open(f_path, "rb") as pdf_file_obj:
    p = pypdf.PdfReader(pdf_file_obj).pages[0].extract_text()
    print(p)