Python list() function takes any iterable as a parameter and returns a list. In Python iterable is the object you can iterate over. Some examples of iterables are tuples, strings, and lists.
Syntax:
list(iterable)
Parameter:
- iterable: an object that could be a sequence (string, tuples) or collection (set, dictionary) or any iterator object.
Note: If we don’t pass any parameter then the list() function will return a list with zero elements (empty list).
Lets see some examples for better understanding.
Example 1: Using list() to create a list from a string
Python
# initializing a stringstring = "ABCDEF"# using list() function to create a listlist1 = list(string)# printing list1print(list1) |
Output:
['A', 'B', 'C', 'D', 'E', 'F']
Example 2: Using list() to create a list from a tuple
Python
# initializing a tupletuple1 = ('A', 'B', 'C', 'D', 'E')# using list() function to create a listlist1 = list(tuple1)# printing list1print(list1) |
Output:
['A', 'B', 'C', 'D', 'E']
Example 3: Using list() to create a list from set and dictionary
Python
# initializing a setset1 = {'A', 'B', 'C', 'D', 'E'}# initializing a dictionarydictionary = {'A': 1, 'B': 2, 'C': 3, 'D': 4, 'E': 5}# using list() to create a listlist1 = list(set1)list2 = list(dictionary)# printingprint(list1)print(list2) |
Output:
['C', 'E', 'D', 'B', 'A'] ['A', 'B', 'C', 'D', 'E']
We can also use list() function while taking input from user to directly take input in form of a list.
Example 4: Taking user input as a list
Python
# Taking input from user as listlist1 = list(input("Please Enter List Elements: "))# printingprint(list1) |
Output:
Please Enter List Elements: 12345 ['1', '2', '3', '4', '5']
