Can't convert integer to string

Question

I'm slightly puzzled on this problem that I have with my Python program. It's a very simple program but it keeps coming up with a problem. Allow me to show you the code...

x=int(input('Enter number 1:'))
y=int(input('Enter number 2:'))
z=x+y
print('Adding your numbers together gives:'+z)

Now, this program, when I run it keeps on saying that "TypeError: Can't convert 'int' object to str implicitly".

I just want it to run normally. Could anyone help?
Thanks.

Look at your `input` lines and spot the obvious difference... — jonrsharpe, Mar 13 '14 at 18:00
@TomFenech That's not a good duplicate. The title is similar but the question is rather different. — John Kugelman, Mar 13 '14 at 18:03

vaultah · Accepted Answer · 2014-03-13T18:27:21.077

The problem is obvious because you can't concatenate str and int. Better approach: you can separate string and the rest of print's arguments with commas:

>>> x, y = 51, 49
>>> z = x + y
>>> print('Adding your numbers together gives:', z)
Adding your numbers together gives: 100
>>> print('x is', x, 'and y is', y)
x is 51 and y is 49

print function will take care of the variable type automatically. The following also works fine:

>>> print('Adding your numbers together gives:'+str(z))
Adding your numbers together gives:100
>>> print('Adding your numbers together gives: {}'.format(z))
Adding your numbers together gives: 100
>>> print('Adding your numbers together gives: %d' % z)
Adding your numbers together gives: 100

score 3 · Answer 2 · answered Mar 13 '14 at 17:59

3

You should rewrite the last line as:

print('Adding your numbers together gives:%s' % z)

because you cannot use + sign to concatenate a string and an int in Python.

answered Mar 13 '14 at 17:59

Selcuk

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score 3 · Answer 3 · answered Mar 13 '14 at 18:10

Your error message is telling you exactly what is going on.

z is an int and you're trying to concatenate it with a string. Before concatenating it, you must first convert it to a string. You can do this using the str() function:

print('Adding your numbers together gives:' + str(z))

Can't convert integer to string

3 Answers3