Python Debug

■In addition to debugging by print statement, debugging by debugger is available.
■The sample is debug.nurse3.
■1) To use the debugger, import pdb must be written before use.
■2) After 1), pdb.set_trace() statement or later is the target of debugging.
■3) After pdb.set_trace() is executed, it stops with the following statement.
■4) Breakpoints can be set at the time.
■Breakpoints are toggle switches, and clicking again will release the breakpoint.
■When stopped, a tooltip appears when the mouse is hovered near a variable.

import pdb


def factorial(n, sum=0):
    if n == 0:
        return sum

    
    sum += n
    print(sum)
    return factorial(n-1, sum)

pdb.set_trace()
factorial(5)

■The following shows the state of stopping after solving and after set_trace().
■Let’s try to place a breakpoint.

Click the Execute button.

Stopped at the breakpoint. Double-click on the variable to see the current value.

Right-click to bring up the menu.