Description of problem:
chm2pdf doesn't work at all. It crashes on a fresh install and it is probably due to a python library (version?) mismatch.

Version-Release number of selected component (if applicable):
Name         : chm2pdf
Version      : 0.9.1
Release      : 19.fc26
Arch         : noarch
Size         : 73 k
Source       : chm2pdf-0.9.1-19.fc26.src.rpm
Repo         : @System
From repo    : fedora
Summary      : A tool to convert CHM files to PDF files
URL          : http://code.google.com/p/chm2pdf/
License      : GPLv2+
Description  : A simple Python script that converts CHM files into PDF files.


How reproducible:
Always

Steps to Reproduce:
1. dnf install chm2pdf
2. try to use it... `chm2pdf`; `chm2pdf -h`; etcetera.

Actual results:

Traceback (most recent call last):                                                                                                       
    File "/usr/bin/chm2pdf", line 24, in <module>                                                                                        
        import chm.chm as chm                                                                                                            
      File "/usr/lib64/python2.7/site-packages/chm/chm.py", line 34, in                                                                  
    <module>                                                                                                                             
        import extra                                                                                                                     
    ImportError: /usr/lib64/python2.7/site-packages/chm/extra.so: undefined                                                              
    symbol: pychm_process_wlc