Python String join() Method Last Updated : 12 Nov, 2024 Comments Improve Suggest changes Like Article Like Report The join() method in Python is used to concatenate the elements of an iterable (such as a list, tuple, or set) into a single string with a specified delimiter placed between each element.Lets take a simple example to join list of string using join() method.Joining a List of StringsIn below example, we use join() method to combine a list of strings into a single string with each string separated by a space. Python a = ['Hello', 'world', 'from', 'Python'] res = ' '.join(a) print(res) OutputHello world from Python Table of ContentSyntax of join()Examples of join() Method on Different Data TypesUsing join() with TuplesUsing join() with setUsing join() with DictionaryFrequently Asked Questions on Python String Join() MethodSyntax of join()separator.join(iterable)Parameters:separator: The string placed between elements of the iterable.iterable: A sequence of strings (e.g., list, tuple etc) to join together.Return Value:Returns a single string formed by joining all elements in the iterable, separated by the specified separatorIf the iterable contains any non-string values and it raises a TypeError exception.Examples of join() Method on Different Data TypesBelow are examples of how join() method works with different data types.Using join() with TuplesThe join() method works with any iterable containing strings, including tuples. Python s = ("Learn", "to", "code") # Separator "-" is used to join strings res = "-".join(s) print(res) OutputLearn-to-code Using join() with setIn this example, we are joining set of String. Python s = {'Python', 'is', 'fun'} # Separator "-" is used to join strings res = '-'.join(s) print(res) OutputPython-is-fun Note: Since sets are unordered, the resulting string may appear in any order, such as "fun is Python" or "Python is fun".Using join() with DictionaryWhen using the join() method with a dictionary, it will only join the keys, not the values. This is because join() operates on iterables of strings and the default iteration over a dictionary returns its keys. Python d = {'Geek': 1, 'for': 2, 'Geeks': 3} # Separator "_" is used to join keys into a single string res = '_'.join(d) print(res) OutputGeek_for_Geeks Comment More infoAdvertise with us Next Article Python String join() Method S Striver Follow Improve Article Tags : Misc Python Python-Functions python-list python-string +1 More Practice Tags : Miscpythonpython-functionspython-list Similar Reads Python String format_map() Method Python String format_map() method is an inbuilt function in Python, which is used to return a dictionary key's value. Syntax: string.format_map(z) Parameters: Here z is a variable in which the input dictionary is stored and string is the key of the input dictionary. input_dict: Takes a single parame 2 min read Python String index() Method The index() method in Python is used to find the position of a specified substring within a given string. It is similar to the find() method but raises a ValueError if the substring is not found, while find() returns -1. 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