Code debugging

Code debugging is a process that can help you to understand the cause of an error, by providing an input to the code and walking through each line of the code and seeing how it evaluates at the end. The Python language contains some debugging tools to get insights from the code, starting with a simple print function, assert command till a complete unit testing for the code. PyCharm provides an easy way to debug the code and see the evaluated values.

To debug code in PyCharm (say, a nested for loop with if clauses), you need to set a breakpoint on the line at which you want PyCharm to stop the program execution. When PyCharm hits this line, it will pause the program and dump the memory to see the contents of each variable:

Notice that the value of each variable is printed besides it, on the first iteration:

Also, you can right-click on the breakpoint and add a specific condition for any variable. If the variable is evaluated to a specific value, then a log message will be printed: