python + gdb

# To print a str variable.
x/s ((PyStringObject*)str_var)->ob_sval

define ppstr
  printf "%s\n", ((PyStringObject*)$arg0)->ob_sval
end

define ppr
  printf "%s\n", ((PyStringObject*)PyObject_Repr($arg0))->ob_sval
end

# Print whole string.
printf "%s\n", str_var

# Print dict.
printf "%s\n", ((PyStringObject*)dict_repr((PyDictObject*)dict_var))->ob_sval

# Print dict's keys
printf "%s\n", ((PyStringObject*)list_repr((PyListObject*)((PyListObject*)PyDict_Keys((PyDictObject*)dict_var))))->ob_sval

# Print list.
printf "%s\n", ((PyStringObject*)list_repr((PyListObject*)list_var))->ob_sval

# Contents of a module (module dict)
printf "%s\n", ((PyStringObject*)dict_repr((PyDictObject*)(((PyModuleObject*)module)->md_dict)))->ob_sval

# Variable names in a module (module dict's keys)
printf "%s\n", ((PyStringObject*)list_repr((PyListObject*)((PyListObject*)PyDict_Keys((PyDictObject*)(((PyModuleObject*)module)->md_dict)))))->ob_sval