String literals with maya.eval in python

[Jeremy YeoKhoo]

Hey guys, I am having string literal issues with my following piece of code. 

mel.eval('runTimeCommand -annotation "Herrow" -category "User" -commandLanguage "python" -command ("from tools.anim import picker\nreload(picker)") customCmd;')    

I am having escaping with the parentheses, I think. Could someone throw me a line please :)

Thanks

-Jeremy

[ha...@haggi.de]

-You could try:

"from tools.anim import picker;reload(picker)"

haggi

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[Jeremy YeoKhoo]

er no that didnt work

[Justin Israel]

This seems to work fine:

mel.eval('runTimeCommand -annotation "Herrow" -category "User" -commandLanguage "python" -command "from tools.anim import picker; reload(picker)" customCmd2;')

​

And so does the python commands equivalent

cmds.runTimeCommand("customCmd", annotation="Herrow", category="User", commandLanguage="python", command="from tools.anim import picker; reload(picker)")

​

You don't need the outer parenthesis around the command string. And using the semi-colon instead of the newline works. The python equiv is a bit easier to manage though.

Also sometimes if you find yourself dealing with complicated nested quotations (not really the case here, but releated), it can help to use triple quotes:

complexString = '''some code that contains both "double quotes" and 'single quotes' all in one'''

​

And using the repr string formatting for combining snippets with quotes and other snippets with quotes:

complexString = '''some code that contains both "double quotes" and 'single quotes' and also %r'''
print complexString % complexString

​

-- justin

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[Jeremy YeoKhoo]

I left out a snippet of code in my command, so Haggi was right, my bad... 

In my code I was trying to parse in a string in my command arg for runTimeCommand such as:

picker.control("mySel")

so in respect to mel I was trying to use the escape characters for the double quotes

-c "picker.control(\"mySel\")"

Needless to say that didn't work either, but I took Justin's advice rewrote the command as 

mel.eval('''runTimeCommand -ann "Herrow" -cat "User" -cl "python" -c "from tools.anim import picker;reload(picker);picker('mySel')" customCmd;''')    

Realising that mel probably doesnt see the single quotes and python does.

So for now, that works

Cool thanks guys

-Jeremy

On Thursday, 12 June 2014 17:06:27 UTC+10, Jeremy YeoKhoo wrote: