Which operator is used to concatenate strings in Python?

In Python, the operator used to concatenate strings is the plus sign. When two or more strings are combined using this operator, they form a single string. For example, if you have two strings, "Hello" and "World", you can concatenate them by using the plus sign like this: "Hello" + " " + "World" which results in the string "Hello World".

This operator directly joins the strings together, allowing for the creation of new string values by combining existing ones. Concatenation is not performed using other symbols such as the minus sign, asterisk, or slash, which serve different purposes in Python operations—such as arithmetic operations or other data manipulations.