[Csnd] Using pycall to call a function with no parameters?
| Date | 2007-11-03 15:30 |
| From | Lou Cohen |
| Subject | [Csnd] Using pycall to call a function with no parameters? |
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If I define a python function to have no input parameters (and one result,) it seems that csound dies when I try to invoke that function using pycall1i. Below is my csound code, followed by the terminal output. You will see that everything works as it should until the final pycall1i line, at which point csound halts (sometimes crashes.) Clearly I can work around this by always defining at least one input parameter for a python function, even if I ignore it, but I want to be sure I haven’t misunderstood something... thanks, Lou <CsoundSynthesizer> <CsInstruments> ;</CsOptions> ; Select audio/midi flags here according to platform ; Audio out Audio in No messages ;-odac -iadc ; -d ;;;RT audio I/O ; For Non-realtime ouput leave only the line below: ; -o linseg.wav -W ;;; for file output any platform ;</CsOptions> ;<CsInstruments> ;******************************* sr=48000 kr=480 ksmps=100 nchnls=1 pyinit ;define a function that ignores its input parameter d and uses globals a,b pyruni {{ def myfun(d): c=a+b return c }} ;define a function that has no input parameter, only uses globals a,b pyruni {{ def myotherfun(): c=a+b return c }} ;use python to set globals a, b and call both functions ; also use python to print the outputs of the functions. pyruni {{ a=1 b=2 print "myfun=", myfun(6) print "myotherfun=", myotherfun() a=1000 print "myfun=", myfun(6) print "myotherfun=", myotherfun() }} ;use csound to set one of the python globals pyassigni "a", 64 ;use pyruni to call the function with the dummy input parameter pyruni {{print "myfun=", myfun(6)}} ;use pyruni to call the function with no input parameter pyruni {{print "myotherfun=", myotherfun()}} ;use pycall1i to call the function with the dummy input parameter ic pycall1i "myfun", 1 ;use csound to print the result print ic ;use pycall1i to call the function that has no input parameter (never gets here, or crashes here!) iotherc pycall1i "myotherfun" print iotherc instr 1 endin </CsInstruments> <CsScore> f 0 900000 ;dummy table for realtime input i 1 0 10000 e </CsScore> </CsoundSynthesizer> ---------------------------------------- terminal output: Csound version 5.04.0 (float samples) Nov 10 2006 0dBFS level = 32768.0 myfun= 3 myotherfun= 3 myfun= 1002 myotherfun= 1002 myfun= 66.0 myotherfun= 66.0 instr 0: ic = 66.000 Csound tidy up: Bus error inactive allocs returned to freespace end of score. overall amps: 0.0 overall samples out of range: 0 0 errors in performance Elapsed time at end of performance: real: 0.906s, CPU: 0.090s --------------------------- Permanent email: loucohen@jolc.net Music and video: http://ruccas.org/wiki.pl/Lou_Cohen More music and video: http://www.youtube.com/loucohen Astronomy: http://www.jolc.net ---------------------------- |
| Date | 2007-11-03 18:04 |
| From | "Oeyvind Brandtsegg" |
| Subject | [Csnd] Re: Using pycall to call a function with no parameters? |
| Attachments | None |