Debugging by pdb

d(own) [count]

Move the current frame count (default one) levels down in the stack trace (to a newer frame).

u(p) [count]

Move the current frame count (default one) levels up in the stack trace (to an older frame).

s(tep)

Execute the current line, stop at the first possible occasion (either in a function that is called or on the next line in the current function).

n(ext)

Continue execution until the next line in the current function is reached or it returns. (The difference between next and step is that step stops inside a called function, while next executes called functions at (nearly) full speed, only stopping at the next line in the current function.)

r(eturn)

Continue execution until the current function returns.

c(ont(inue))

Continue execution, only stop when a breakpoint is encountered.

ll | longlist

List all source code for the current function or frame. Interesting lines are marked as for list.

! statement

Execute the (one-line) statement in the context of the current stack frame.

q(uit)

Quit from the debugger.