If you need to concatenate a string and another type, you have to do typecasting when using the print function as explained in Type casting in Python.
So to convert age to a string you make str(age) in order to print a phrase using the + sign.
name = 'Bob'
weight = 80
print('My name is ' + name + ' and I weight ' + str(weight) + ' kg')My name is Bob and I weight 80 kgBut that is not the best way to handle situations like this.
The best solution is to use String Interpolation, also called f strings.
Let’s first see how our example looks like using string interpolation.
name = 'Bob'
weight = 80
print(f'My name is {name} and I weight {weight} kg')My name is Bob and I weight 80 kgNotice the f at the beginning signaling to the interpreter that we are going to use interpolation, the presence of this f is the reason why this is also called f strings.
After the f you start your string, as usual, using quotes.
The key difference is that when you want to evaluate an expression like using the value of a variable, you just put them inside curly braces.
This is a simpler and more comfortable way to write very complex strings and you don’t have to worry about type conversion using type casting.