How to use breakpoints for debugging in PyCharm.

To perform breakpoint debugging in PyCharm, you can follow these steps:

1. Open your Python code file.
2. Click on the area beside the line number where you want to set a breakpoint. This will display a small red dot in the line number area, indicating that a breakpoint has been set.
3. Click on the green play button in the top right corner of the PyCharm window (or use the shortcut Shift+F9) to start the debugging mode.
4. Use the debug console: In the bottom area of the PyCharm window, you can find a debug console. Here you can view the values of variables, debug using Python commands, and perform other operations.
5. Utilize the debugging toolbar: At the top of the PyCharm window, there is a debugging toolbar containing various buttons for debugging, such as resume, step into, and skip current line.
6. Utilize the breakpoint window: On the left side of the PyCharm window, there is a breakpoint window where you can view and manage the set breakpoints.

You can set multiple breakpoints in the code as needed and use the debugging tool to debug the program line by line, observing the values of variables and the flow of program execution.