When programming in Python, strings and lists are two of the most common objects you'll encounter. Strings are immutable, meaning that they cannot be changed, while lists are not. A common task when you're programming is to concatenate, or add together, the contents of two strings. There are two ways to do this.
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Obtain the two or more strings. For example, to get the strings as input from a user, use raw_input:
x = raw_input("Please enter first string: ") y = raw_input("Please enter second string: ")
Concatenate the strings as string objects. Strings may be immutable, but they can be concatenated and appended to. To concatenate the two examples in Step 1, use the following:
z = x + y print z
Convert the strings to lists, concatenate their contents, then convert back to a string. Using the same example:
a = list(x) b = list(y) c = a + b z = ''.join(c) print z
The .join method joins the members of list "c" -- "a" and "b" concatenated -- with the delimiter inside the quotes -- in this case, an empty string -- and creates a new string, "z."