Python to trigger USB square wave pulse for camera
Python has a library for nearly everything:

 From xkcd.

It unfortunately does not include a module for "make USB do things it wasn't built to do."

You can't send single pulses over USB.  It isn't designed to do that.  

The port information you showed is about a connected device.  Looks like you had an LG phone plugged in to your computer.

You can get a USB to serial adapter, and twiddle the output signals through pyserial to send your command to the camera.  You can directly change the states of DTR and RTS. Your RS232/USB adapter must provide those two outputs on the RS232 cable.

You'll probably need a bit of hardware to convert the signal levels.  The RS232 signal levels aren't really directly compatible with modern electronics.  A small relay or a couple of transistors (at most) should do.

Another alternative would be to write a small program for a small microprocessor with a USB connection (like an Arduino Nano.) The program would listen for commands from the PC and activate its outputs as needed.  You'd also have to keep the signal levels in mind.

In either of the above cases, you could use an optocoupler to provide the signal to the camera.  The camera would typically only need to have two connections (trigger and ground) shorted together to make a photo.