How to prevent the tshark console window from popping up when running a Pyshark-invoking .exe file?

[jinshiq]

In my Python project, my main application 'main.py' uses Tkinter to design UI. Another script 'process_pcap.py' uses Pyshark to process .pcap files. The 'main.py' calls 'processs_pcap.py' from the UI. The 'main.py' is converted to 'main.exe' file using Pyinstaller. When I run 'main.exe' and call 'process_pcap.py' to process a .pcap file, a 'tshark' command line window is popped up. I don't want the popped up window. How to prevent the 'tshark' console window from popping up when running the Pyshark API in a .exe file?