Patch for client.py, part of the Komodo Python remote debugger. Fixes an exception being raised when "eval" is used, for versions 7.1.0 and 8.5.0.

client-7.1.0.patch

3249,3250c3249
<     _eval_optlist = [['i','transaction_id', int, 1, -1, None],
<                 ['l','length', int, 1, 0, None]]
---
>     _eval_optlist = [['i','transaction_id', int, 1, -1, None]]
3252c3251
<         (tid, data_length, data,) = self._getopts(cmdargs, self._eval_optlist, "eval")
---
>         (tid, data,) = self._getopts(cmdargs, self._eval_optlist, "eval")
3268,3269c3267,3268
<         prop = Property(None, None, value, self._data_encoding,
<                             self._show_hidden, hiddenContextTypes[context_id])
---
>         prop = Property(data, data, value, self._data_encoding,
>                             self._show_hidden, hiddenContextTypes[0])

client-8.5.0.patch

3426,3427c3426
<     _eval_optlist = [['i','transaction_id', int, 1, -1, None],
<                 ['l','length', int, 1, 0, None]]
---
>     _eval_optlist = [['i','transaction_id', int, 1, -1, None]]
3429c3428
<         (tid, data_length, data,) = self._getopts(cmdargs, self._eval_optlist,
 "eval")
---
>         (tid, data,) = self._getopts(cmdargs, self._eval_optlist, "eval")
3445,3446c3444,3445
<         prop = Property(None, None, value, self._data_encoding,
<                             self._show_hidden, hiddenContextTypes[context_id])

---
>         prop = Property(data, data, value, self._data_encoding,
>                             self._show_hidden, hiddenContextTypes[0])

Here's what worked for me:

$ curl 'http://downloads.activestate.com/Komodo/releases/archive/8.x/8.5.4/remotedebugging/Komodo-PythonRemoteDebugging-8.5.4-86985-linux-x86_64.tar.gz?_ga=2.213132828.928515719.1533909623-2080295309.1533909623' -o Komodo-PythonRemoteDebugging-8.5.4-86985-linux-x86_64.tar.gz
$ tar xf Komodo-PythonRemoteDebugging-8.5.4-86985-linux-x86_64.tar.gz
$ cd Komodo-PythonRemoteDebugging-8.5.4-86985-linux-x86_64
$ cp -r python3lib/dbgp .

// the following patch fixes expression evaluation
$ curl -L https://gist.githubusercontent.com/x-yuri/1ec2e2a67b5c2aae994668b7bde6fd4d/raw/854bcdd1ce2c3de856b89c4024a7b53c30fd7c67/client.py.patch -o dbgp/client.py.patch
$ patch dbgp/client.py < dbgp/client.py.patch

// the following patch allows to debug scripts that behave differently
// depending on basename($0) (symlink)
// e.g. ansible-playbook
// or else it would think it's run as ansible
$ curl -L https://gist.githubusercontent.com/x-yuri/1ec2e2a67b5c2aae994668b7bde6fd4d/raw/854bcdd1ce2c3de856b89c4024a7b53c30fd7c67/pydbgp.patch -o pydbgp.patch
$ patch pydbgp < pydbgp.patch

// <F5> in vim
$ path/to/pypdbg -d localhost:9000 /path/to/script

More or less worked. I still have issues with setting breakpoints in arbitrary scripts. It must have to do with anisble creating worker processes.

If you're happy to use Komodo-PythonRemoteDebugging-11.1.0-91033, this might work. Same edits as above, just different line numbers.

--- client.py	2020-06-21 14:32:45.269921276 +1000
+++ client.py.orig	2020-06-21 14:23:37.376844510 +1000
@@ -3433,10 +3433,10 @@
         _template = '<response xmlns="urn:debugger_protocol_v1" command="breakpoint_list" transaction_id="%s">%s</response>'
         self.socket.send_response(_template % (tid, bpinfo))
 
-    _eval_optlist = [['i','transaction_id', int, 1, -1, None]]
-
+    _eval_optlist = [['i','transaction_id', int, 1, -1, None],
+                ['l','length', int, 1, 0, None]]
     def do_eval(self, cmdargs, *args):
-        (tid, data,) = self._getopts(cmdargs, self._eval_optlist, "eval")
+        (tid, data_length, data,) = self._getopts(cmdargs, self._eval_optlist, "eval")
         
         # read data_length from the socket
         if self._data_encoding == 'base64':
@@ -3452,8 +3452,8 @@
             raise CommandError('eval', tid, ERROR_EVAL_FAILED,
                            'eval of expression failed: '+str(e))
 
-        prop = Property(data, data, value, self._data_encoding,
-                            self._show_hidden, hiddenContextTypes[0])
+        prop = Property(None, None, value, self._data_encoding,
+                            self._show_hidden, hiddenContextTypes[context_id])
         
         _template = '<response xmlns="urn:debugger_protocol_v1" command="eval" transaction_id="%s">%s</response>'
 

I verified that client.py was patched (as shown in all above codes) but still I am getting the same error:
required argument [l:length] missing

-- any idea?