gaoxing

### Describe the bug Traceback (most recent call last): File "/home/xgao/anaconda3/bin/abacus-plot", line 33, in sys.exit(load_entry_point('abacus-plot==1.2.0', 'console_scripts', 'abacus-plot')()) File "/home/xgao/anaconda3/lib/python3.9/site-packages/abacus_plot-1.2.0-py3.9.egg/abacus_plot/main.py", line 134, in main File "/home/xgao/anaconda3/lib/python3.9/site-packages/abacus_plot-1.2.0-py3.9.egg/abacus_plot/main.py", line 31, in show_cmdline File...