Got this problem with simple lines, what does all of this mean?

Question

variable3 = "four"
print(int(variable3) + 6)

ValueError: invalid literal for int() with base 10: 'four'

i wanted to try to cast the string that the variable3 has ("four"), converting it in an int, and then to add 6: obtaining the result "four6"... maybe

Answer 1

No need to make it an int, it will only concatenate as that by making 6 a str instead!

>>> variable3 = "four"
>>> print(variable3 + str(6))
four6

Note there are other, potentially more convenient ways to do this

>>> print(variable3 + "6")     # just start with a string "6"
four6
>>> print(f"{variable3}{6}")   # string formatting
four6

Internally, + is interpreted as a call to use the __add__() method on the left side, which has internal logic to combine strings