A string literal must be written between quotes. The following line of code demonstrates a string literal. This example does not do anything since the literal is a value that is never assigned to a variable:

"hello, world"

Without being assigned to a variable, this string can't be printed. String literals don't have to be assigned to a variable to be useful; they can be passed directly to a function such as print. The following code demonstrates both of these cases:

print ("Print a string literal, used in place")
message = "Print a string assigned to a variable"
print(message)