Debug running python processes with gdb

debugging python processes using gdb (gnu debugger) can be very helpful, especially when you're dealing with low-level issues or native extensions. below is an informative tutorial that will guide you through the process of debugging a python program with gdb, including a code example.

### prerequisites

1. **python with debug symbols**: ensure you have a version of python compiled with debug symbols. you can install it using `apt-get` on ubuntu or compile it from source.

on ubuntu, you can install the debug version of python:


2. **gdb**: make sure you have gdb installed. you can install it using:


### step 1: prepare your python code

### step 2: compile the python script with debug information

you may need to run your python script with gdb, so it's best to ensure that you have the debug version of python. if you compiled python from source, ensure you used the `--with-pydebug` option.

### step 3: start gdb with python

run the following command in your terminal to start gdb with the python executable.

### step 4: set breakpoints

once gdb is running, you can set breakpoints in your python code. to set a breakpoint at the `divide` function, use the following command:

### step 5: run the program

now you can run the program with the `run` command. gdb will execute the python script and stop at the breakpoint you set.

### step 6: inspect variables

when gdb hits the breakpoint at `divide`, you can inspect the variables. for example, you can print the values of `a` and `b`:

### step 7: step through the code

you can step through the code line by line using the `step` or `next` commands. this allows you to see how the program execution flows.

### step 8: continue execution

if you want to continue running the program until the next breakpoint or until the program ends, use the `continue` command.

### step 9: han ...

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