[Python] TypeError: Can't convert 'int' object to str implicitly

Problem
I have a Python program as bellows:

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def checkNum(num): if(num>0): print("* number > 0 ( you input " + num + " ).") else: print("* num < 0 ( you input " + num + " ).")

As I try to do test, it showed error message as following:

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>>> import myUtil >>> myUtil.checkNum(10) Traceback (most recent call last): File "<pyshell#3>", line 1, in <module> myUtil.checkNum(10) File "C:\Users\albert\AppData\Local\Programs\Python\Python35-32\lib\site-packages\myUtil.py", line 3, in checkNum print('* number > 0 ( you input ' + num +' )') TypeError: Can't convert 'int' object to str implicitly

How To
You need to use str function to convert number to String

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def checkNum(num): if(num>0): print("* number > 0 ( you input " + str(num) + " ).") else: print("* num < 0 ( you input " + str(num) + " ).")

Test result:

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>>> import myUtil >>> myUtil.checkNum(89) * number > 0 ( you input 89 ). >>> myUtil.checkNum(-20) * num < 0 ( you input -20 ). >>>

Reference
[1] http://stackoverflow.com/questions/13654168/typeerror-cant-convert-int-object-to-str-implicitly