String Concatenation

String Concatenation (Adding Strings Together)

Most programming languages allow you to add strings together. This is called string concatenation. You do this with the + operator.

print("Hello" + "World")

Usually this is done with variables:

print("Hi, my name is " + first_name + ".")

Notice, there is a space after "is". Python doesn't put spaces unless you ask for them. If you need to put two spaces in between two variables, make sure you add one:

print("Hi, my name is " + first_name + " " + last_name + ".") 

Concatenating Strings With Other Data Types

Non-strings must be converted to strings before being concatenated with other strings. If you forget, you will get a TypeError.

For example:

print("I am " + age + " years old.") will error if age is an int

print("I am " + str(age) + " years old.") will concatenate and print as intended

String Duplication (Multiplication)

Python also allows "string multiplication" by multiplying a string by an int.

For example: "$" * 5 will create the string "$$$$$"