Making a string out of a string and an integer in Python

I get this error when trying to take an integer and prepend "b" to it, converting it into a string:

  File "program.py", line 19, in getname
    name = "b" + num
TypeError: Can't convert 'int' object to str implicitly

That's related to this function:

num = random.randint(1,25)
name = "b" + num

name = 'b' + str(num)

or

name = 'b%s' % num

Note that the second approach is deprecated in 3.x.

Python won't automatically convert types in the way that languages such as JavaScript or PHP do.

You have to convert it to a string, or use a formatting method.

name="b"+str(num)

or printf style formatting (this has been deprecated in python3)

name="b%s" % (num,)

or the new .format string method

name="b{0}".format(num)