Breakpoints in subprocesses do not work. Misconfiguration or a bug?

Permanently deleted user

Created October 06, 2014 19:44

Dear Sir or Madam,
I have a project, where Starter.py calls subprocess.Popen for the DirectSubprocess.py. The breakpoints in Starter.py work, in DirectSubprocess they do not work.
I have enabled "attach to subprocess automatically ..."
I am using v 3.4.1.

import subprocess
dir_sub_path = "./DirectSubprocess.py"

direct_sub = subprocess.Popen(dir_sub_path, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
(stdout, stderr) = direct_sub.communicate()

print(stdout)

PYCHARM_DEBUG=1 gives the following output:

/opt/python-2.7/bin/python /export/home/zakharov/pycharm/pycharm-community-3.4.1/helpers/pydev/pydevd.py --multiproc --client 127.0.0.1 --port 57987 --file /export/home/zakharov/try/pycharm_sub/Starter.py
Started in multiproc mode

('Connecting to ', '127.0.0.1', ':', '57987')
('Connected.',)
received >>99    -1    34288
<<

Received command: ??? 99    -1    34288

Received port 34288

pydev debugger: process 36165 is connecting

('Connecting to ', '127.0.0.1', ':', '34288')
('Connected.',)
received >>501    1    0.1    UNIX
<<

Received command: CMD_VERSION 501    1    0.1    UNIX

Connected to pydev debugger (build 135.1057)
sending cmd -->          CMD_VERSION 501    1    @@BUILD_NUMBER@@ 
received >>111    3    python-line    /export/home/zakharov/try/pycharm_sub/Starter.py    47    None    None
<<

Received command: CMD_SET_BREAK 111    3    python-line    /export/home/zakharov/try/pycharm_sub/Starter.py    47    None    None

Added breakpoint:/export/home/zakharov/try/pycharm_sub/Starter.py - line:47 - func_name:None

received >>111    5    python-line    /export/home/zakharov/try/pycharm_sub/Starter.py    44    None    None
111    7    python-line    /export/home/zakharov/try/pycharm_sub/DirectSubprocess.py    43    None    None
111    9    python-line    /export/home/zakharov/try/pycharm_sub/Indirect subprocess.py    46    None    None
111    11    python-line    /export/home/zakharov/try/pycharm_sub/DirectSubprocess.py    46    None    None
122    13    BaseException    0    1
101    15    
<<

Received command: CMD_SET_BREAK 111    5    python-line    /export/home/zakharov/try/pycharm_sub/Starter.py    44    None    None

Added breakpoint:/export/home/zakharov/try/pycharm_sub/Starter.py - line:44 - func_name:None

Received command: CMD_SET_BREAK 111    7    python-line    /export/home/zakharov/try/pycharm_sub/DirectSubprocess.py    43    None    None

Added breakpoint:/export/home/zakharov/try/pycharm_sub/DirectSubprocess.py - line:43 - func_name:None

Received command: CMD_SET_BREAK 111    9    python-line    /export/home/zakharov/try/pycharm_sub/Indirect subprocess.py    46    None    None

Added breakpoint:/export/home/zakharov/try/pycharm_sub/Indirect subprocess.py - line:46 - func_name:None

Received command: CMD_SET_BREAK 111    11    python-line    /export/home/zakharov/try/pycharm_sub/DirectSubprocess.py    46    None    None

Added breakpoint:/export/home/zakharov/try/pycharm_sub/DirectSubprocess.py - line:46 - func_name:None

Received command: CMD_ADD_EXCEPTION_BREAK 122    13    BaseException    0    1

Exceptions to hook on terminate: {u'BaseException': <pydevd_breakpoints.ExceptionBreakpoint instance at 0x21c1440>}

Received command: CMD_RUN 101    15    

sending cmd -->    CMD_THREAD_CREATE 103    2    <xml><thread name="pydevd.reader" id="-1"/></xml> 
sending cmd -->    CMD_THREAD_CREATE 103    4    <xml><thread name="pydevd.writer" id="-1"/></xml> 
sending cmd -->    CMD_THREAD_CREATE 103    6    <xml><thread name="MainThread" id="pid36165_seq1" /></xml> 
sending cmd -->   CMD_THREAD_SUSPEND 105    8    <xml><thread id="pid36165_seq1" stop_reason="111" message="None"><frame id="15409936" name="&lt;module&gt;" file="/export/home/zakharov/try/pycharm_sub/Starter.py" line="44">"</frame><frame id="36008320" name="run" file="/export/home/zakharov/pycharm/pycharm-community-3.4.1/helpers/pydev/pydevd.py" line="1226">"</frame><frame id="15477888" name="&lt;module&gt;" file="/export/home/zakharov/pycharm/pycharm-community-3.4.1/helpers/pydev/pydevd.py" line="1733">"</frame></thread></xml> 
Starter starting
received >>114    17    pid36165_seq1    15409936    FRAME
<<

Received command: CMD_GET_FRAME 114    17    pid36165_seq1    15409936    FRAME

('processing internal command ', '<pydevd_comm.InternalGetFrame instance at 0x21c1488>')
sending cmd -->        CMD_GET_FRAME 114    17    <xml><var name="__builtins__" type="module" value="module: <module '__builtin__' (built-in)&gt;" isContainer="True" /> <var name="__doc__" type="str" value="str:  Script docstring goes here " /> <var name="__file__" type="str" value="str: /export/home/zakharov/try/pycharm_sub/Starter.py" /> <var name="__name__" type="str" value="str: __main__" /> <var name="__package__" type="NoneType" value="NoneType: None" /> <var name="dir_sub_path" type="str" value="str: ./DirectSubprocess.py" /> <var name="os" type="module" value="module: <module 'os' from '/opt/python-2.7/lib/python2.7/os.pyc'&gt;" isContainer="True" /> <var name="subprocess" type="module" value="module: <module 'subprocess' from '/opt/python-2.7/lib/python2.7/subprocess.pyc'&gt;" isContainer="True" /> </xml> 
received >>111    19    python-line    /export/home/zakharov/try/pycharm_sub/Starter.py    47    None    None
<<

Received command: CMD_SET_BREAK 111    19    python-line    /export/home/zakharov/try/pycharm_sub/Starter.py    47    None    None

Added breakpoint:/export/home/zakharov/try/pycharm_sub/Starter.py - line:47 - func_name:None

received >>106    21    pid36165_seq1
<<

Received command: CMD_THREAD_RUN 106    21    pid36165_seq1

('processing internal command ', '<pydevd_comm.InternalRunThread instance at 0x21c1d88>')
('Connecting to ', '127.0.0.1', ':', '57987')
('Connected.',)
received >>99    -1    39720
<<

Received command: ??? 99    -1    39720

('Connecting to ', '127.0.0.1', ':', '39720')
('Connected.',)
received >>501    1    0.1    UNIX
<<

Received command: CMD_VERSION 501    1    0.1    UNIX

sending cmd -->          CMD_VERSION 501    1    @@BUILD_NUMBER@@ 
received >>111    23    python-line    /export/home/zakharov/try/pycharm_sub/Starter.py    47    None    None
<<

received >>111    3    python-line    /export/home/zakharov/try/pycharm_sub/Starter.py    47    None    None
<<

Received command: CMD_SET_BREAK 111    23    python-line    /export/home/zakharov/try/pycharm_sub/Starter.py    47    None    None

Received command: CMD_SET_BREAK 111    3    python-line    /export/home/zakharov/try/pycharm_sub/Starter.py    47    None    None

Added breakpoint:/export/home/zakharov/try/pycharm_sub/Starter.py - line:47 - func_name:None

Added breakpoint:/export/home/zakharov/try/pycharm_sub/Starter.py - line:47 - func_name:None

received >>111    25    python-line    /export/home/zakharov/try/pycharm_sub/Starter.py    44    None    None
111    27    python-line    /export/home/zakharov/try/pycharm_sub/DirectSubprocess.py    43    None    None
111    29    python-line    /export/home/zakharov/try/pycharm_sub/Indirect subprocess.py    46    None    None
111    31    python-line    /export/home/zakharov/try/pycharm_sub/DirectSubprocess.py    46    None    None
122    33    BaseException    0    1
<<

Received command: CMD_SET_BREAK 111    25    python-line    /export/home/zakharov/try/pycharm_sub/Starter.py    44    None    None

Added breakpoint:/export/home/zakharov/try/pycharm_sub/Starter.py - line:44 - func_name:None

Received command: CMD_SET_BREAK 111    27    python-line    /export/home/zakharov/try/pycharm_sub/DirectSubprocess.py    43    None    None

Added breakpoint:/export/home/zakharov/try/pycharm_sub/DirectSubprocess.py - line:43 - func_name:None

Received command: CMD_SET_BREAK 111    29    python-line    /export/home/zakharov/try/pycharm_sub/Indirect subprocess.py    46    None    None

Added breakpoint:/export/home/zakharov/try/pycharm_sub/Indirect subprocess.py - line:46 - func_name:None

Received command: CMD_SET_BREAK 111    31    python-line    /export/home/zakharov/try/pycharm_sub/DirectSubprocess.py    46    None    None

Added breakpoint:/export/home/zakharov/try/pycharm_sub/DirectSubprocess.py - line:46 - func_name:None

Received command: CMD_ADD_EXCEPTION_BREAK 122    33    BaseException    0    1

Exceptions to hook on terminate: {u'BaseException': <pydevd_breakpoints.ExceptionBreakpoint instance at 0x21c1758>}

sending cmd -->       CMD_THREAD_RUN 106    10    pid36165_seq1    None 
received >>111    5    python-line    /export/home/zakharov/try/pycharm_sub/Starter.py    44    None    None
111    7    python-line    /export/home/zakharov/try/pycharm_sub/DirectSubprocess.py    43    None    None
111    9    python-line    /export/home/zakharov/try/pycharm_sub/Indirect subprocess.py    46    None    None
111    11    python-line    /export/home/zakharov/try/pycharm_sub/DirectSubprocess.py    46    None    None
122    13    BaseException    0    1
101    15    
<<

Received command: CMD_SET_BREAK 111    5    python-line    /export/home/zakharov/try/pycharm_sub/Starter.py    44    None    None

Added breakpoint:/export/home/zakharov/try/pycharm_sub/Starter.py - line:44 - func_name:None

Received command: CMD_SET_BREAK 111    7    python-line    /export/home/zakharov/try/pycharm_sub/DirectSubprocess.py    43    None    None

Added breakpoint:/export/home/zakharov/try/pycharm_sub/DirectSubprocess.py - line:43 - func_name:None

Received command: CMD_SET_BREAK 111    9    python-line    /export/home/zakharov/try/pycharm_sub/Indirect subprocess.py    46    None    None

Added breakpoint:/export/home/zakharov/try/pycharm_sub/Indirect subprocess.py - line:46 - func_name:None

Received command: CMD_SET_BREAK 111    11    python-line    /export/home/zakharov/try/pycharm_sub/DirectSubprocess.py    46    None    None

Added breakpoint:/export/home/zakharov/try/pycharm_sub/DirectSubprocess.py - line:46 - func_name:None

Received command: CMD_ADD_EXCEPTION_BREAK 122    13    BaseException    0    1

Exceptions to hook on terminate: {u'BaseException': <pydevd_breakpoints.ExceptionBreakpoint instance at 0x21c3f38>}

Received command: CMD_RUN 101    15    

sending cmd -->    CMD_THREAD_CREATE 103    12    <xml><thread name="pydevd.reader" id="-1"/></xml> 
sending cmd -->    CMD_THREAD_CREATE 103    14    <xml><thread name="pydevd.writer" id="-1"/></xml> 
sending cmd -->   CMD_THREAD_SUSPEND 105    12    <xml><thread id="pid36165_seq1" stop_reason="111" message="None"><frame id="15409936" name="&lt;module&gt;" file="/export/home/zakharov/try/pycharm_sub/Starter.py" line="47">"</frame><frame id="36008320" name="run" file="/export/home/zakharov/pycharm/pycharm-community-3.4.1/helpers/pydev/pydevd.py" line="1226">"</frame><frame id="15477888" name="&lt;module&gt;" file="/export/home/zakharov/pycharm/pycharm-community-3.4.1/helpers/pydev/pydevd.py" line="1733">"</frame></thread></xml> 
received >>114    35    pid36165_seq1    15409936    FRAME
<<

Received command: CMD_GET_FRAME 114    35    pid36165_seq1    15409936    FRAME

('processing internal command ', '<pydevd_comm.InternalGetFrame instance at 0x21c13b0>')
sending cmd -->        CMD_GET_FRAME 114    35    <xml><var name="__builtins__" type="module" value="module: <module '__builtin__' (built-in)&gt;" isContainer="True" /> <var name="__doc__" type="str" value="str:  Script docstring goes here " /> <var name="__file__" type="str" value="str: /export/home/zakharov/try/pycharm_sub/Starter.py" /> <var name="__name__" type="str" value="str: __main__" /> <var name="__package__" type="NoneType" value="NoneType: None" /> <var name="dir_sub_path" type="str" value="str: ./DirectSubprocess.py" /> <var name="direct_sub" type="Popen" value="Popen: <subprocess.Popen object at 0x21c2510&gt;" isContainer="True" /> <var name="os" type="module" value="module: <module 'os' from '/opt/python-2.7/lib/python2.7/os.pyc'&gt;" isContainer="True" /> <var name="stderr" type="str" value="str: Patching args: ['./DirectSubprocess.py'] Process is not python, returning. Patching args: ['./DirectSubprocess.py'] Process is not python, returning. " /> <var name="stdout" type="str" value="str: Direct subprocess starting 4950 Indirect subprocess starting 4950 Indirect subprocess done  Direct Subprocess done " /> <var name="subprocess" type="module" value="module: <module 'subprocess' from '/opt/python-2.7/lib/python2.7/subprocess.pyc'&gt;" isContainer="True" /> </xml>

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