abaqus scripting: TypeError: cannot concatenate 'str' and 'Set' objects

Question

I get the error

TypeError: cannot concatenate 'str' and 'Set' objects

and the error is caused by my code

name=inst1name+'-'+setName

I know the problem is: inst1name is a set object, however this error never come up before when I run the script.

Do you know why is this? and how can I solve it?

str(inst1name)? what do you expect to happen when trying to concat a set and a str? — Padraic Cunningham
– Padraic Cunningham, Commented Aug 21, 2014 at 11:33
"I know the problem is: inst1name is a set object." I think it's the other way around. if inst1name was a set and setName was a string, you'd get unsupported operand type(s) for +: 'set' and 'str'. You get cannot concatenate 'str' and 'set' objects when the first argument is a string and the second argument is a set. — Kevin
– Kevin, Commented Aug 21, 2014 at 11:44

enrico.bacis · Accepted Answer · 2014-08-21 11:35:53Z

1

You could explicitly convert the set to its string representation like this:

name = inst1name + '-' + str(setName)

But a better way would be to use string composition like this:

name = '%s-%s' % (inst1name, setName)

Or even string.format like this:

name = '{}-{}'.format(inst1name, setName)

answered Aug 21, 2014 at 11:35

enrico.bacis

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1 Comment

Emma Wong Over a year ago

thank you! I also tried your method to solve a similar problem, and this is the code after change: str(setsTuple) #setsTuple is a set muscleNodes=setsTuple[1] however the same error comes out, why is it?

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