Unable to insert variable into string

Question

I am little bit new to Python and I got stuck a bit in this moment:

c = 5
cmds.pointPosition(geo[0]+".cv[0]["+c+"2]", w=True)

it gives me error:

Error: TypeError: file line 39: coercing to Unicode: need string or buffer, int found #

Question is how to put variable c = 5 inside second bracket so it will be 7?

Try str(c) or format() or an f-string.

Code-Apprentice
– Code-Apprentice

2018-01-21 04:18:56 +00:00
Commented Jan 21, 2018 at 4:18 — Code-Apprentice
– Code-Apprentice, Commented Jan 21, 2018 at 4:18

cs95 · Accepted Answer · 2018-01-21 04:27:05Z

6

Avoid string concatenation when you can. This is a good use case for str.format.

cmds.pointPosition("{}.cv[0][{}]".format(geo[0], c + 2), w=True)

Which works assuming c holds the value of an integer to begin with (otherwise, the c + 2 step fails).

edited Jan 21, 2018 at 4:27

answered Jan 21, 2018 at 4:19

cs95

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1 Comment

Vlad Over a year ago

Awesome explanation . Thanks :)

Code-Apprentice · Accepted Answer · 2018-01-21 04:47:59Z

4

Python does not automatically convert an integer into its string representation like some languages. You need convert it explicitly yourself with str(), format(), or an f-string.

edited Jan 21, 2018 at 4:47

answered Jan 21, 2018 at 4:20

Code-Apprentice

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Comments

Veera Balla Deva · Accepted Answer · 2018-01-21 04:26:23Z

1

c = 5
cmds.pointPosition(geo[0]+".cv[0][" + str(c) + "2]", w=True)

In Python, you can't concatenate str and int.

answered Jan 21, 2018 at 4:26

Veera Balla Deva

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