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<body class='hmmessage'><div dir='ltr'>Hello there,<div><br></div><div>when I trying to extract "msg" field generated by example program "demo-tracef" with python binding , </div><div>I got following error message:</div><div><br></div><div><div>Traceback (most recent call last):</div><div> File "data.py", line 46, in <module></div><div> sequence = event["msg"]</div><div> File "/usr/local/lib/python3.3/site-packages/babeltrace.py", line 806, in __getitem__</div><div> return field.value</div><div> File "/usr/local/lib/python3.3/site-packages/babeltrace.py", line 1279, in value</div><div> value.append(evDef.value)</div><div>AttributeError: 'NoneType' object has no attribute 'value'</div></div><div><br></div><div><br></div><div>but everything works fine with babeltrace cmd</div><div><div>[15:42:32.322566678] (+?.?????????) master lttng_ust_tracef:event: { cpu_id = 2 }, { _msg_length = 46, msg = "This is a "mystring test" formatted 0 event 42" }</div><div>[15:42:32.322582002] (+0.000015324) master lttng_ust_tracef:event: { cpu_id = 2 }, { _msg_length = 46, msg = "This is a "mystring test" formatted 1 event 42" }</div><div>[15:42:32.322582838] (+0.000000836) master lttng_ust_tracef:event: { cpu_id = 2 }, { _msg_length = 46, msg = "This is a "mystring test" formatted 2 event 42" }</div><div>[15:42:32.322583416] (+0.000000578) master lttng_ust_tracef:event: { cpu_id = 2 }, { _msg_length = 46, msg = "This is a "mystring test" formatted 3 event 42" }</div><div>[15:42:32.322584002] (+0.000000586) master lttng_ust_tracef:event: { cpu_id = 2 }, { _msg_length = 46, msg = "This is a "mystring test" formatted 4 event 42" }</div></div><div><br></div><div>any idea of this ?</div><div><br></div><div>Regards,</div><div>Yiyang</div> </div></body>
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