Hello Leszek, How about:
>>> var = "fo a" >>> var[2] ' ' >>> var[2] == ' ' True JM > Le 10 déc. 2015 à 11:33, Leszek Wroński <[email protected]> a écrit : > > Guys, > > Frescobaldi has the useful 'slur for the selected notes' snippet under C-(. I > want to have the same functionality for beams. That is, I want to be able to > select some notes, and then via the snippet insert a '[' in the first space > (that is, after the first note), and then a ']' at the end. > > Unfortunately, I have never in my life written a line of python... till this > day, that is. So, I'm trying the following ('W' is for whitespace): > > 1 -*- name: mybeam; python; selection: strip; > 2 x = 0 > 3 mysequence = text > 4 while x < len(text): > 5 WW if text[x] == ' ': > 6 WWWW mysequence[x] = '[' > 7 WWWW break > 8 WW x = x + 1 > 9 text = mysequence + ']' > > Notice that line 5 contains a space between the quotes. Of course I need to > add conditions regarding what to do if there's no space in the selection etc. > But that's for later, once this basic script actually works. As you can see, > I thought I'd copy the selection to 'mysequence' string to manipulate on it; > this is probably unneeded. But after writing the above I got, at line 5, an > error "TypeError: 'unicode' object does not support item assignment". > > What I found weird is that to my untrained eyes line 5 does no assigning, but > rather checks whether the xth element of the string text is a space. Anyway, > after some googling I decided to substitute "is" for "==" in line 5. Right > now the script does not give any errors, but it only adds a ']' at the end of > the selection. I'm apparently unable to check whether the xth element of the > string text is a space. I tried > > if text[x] == ' %d': > > and > > if text[x] == u"\u0020": > > and > > if text[x].isspace(): > > to no avail (the last one gave the "unicode object does not support item > assignment" error again, which I don't understand at all, having copied the > command from > http://www.ehow.com/how_12112665_determine-character-whitespace-python.html > <http://www.ehow.com/how_12112665_determine-character-whitespace-python.html>). > Could anyone give me a hint on this? > > Best regards, > > Leszek. > > _______________________________________________ > lilypond-user mailing list > [email protected] > https://lists.gnu.org/mailman/listinfo/lilypond-user
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