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Why isn't work
Where is the problem https://code.sololearn.com/c4B2eRYfEzT7/?ref=app
2 Answers
+ 1
I've fixed quite a few issues:
https://code.sololearn.com/ceF4jFVt59wH/?ref=app
0
obj.addbook(amount)
addbook is a method of object of class called catalogue
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