Python - list() Function

The Python list() function (or list() constructor) is used to create list using an iterable object. An iterable object can be any data structure like list, tuple, set, string and dictionary etc. An iterable created by range() function can also be used here.

Syntax

list(iterable)

Parameters

Return Value

Returns a list containing all elements of the specified iterable.

Example:

In the below example, list() function is used to create list using a given iterable.

#using list as an iterable
MyList = list(['JAN', 'FEB', 'MAR', 'APR'])
print(MyList)

#using tuple as an iterable
MyList = list(('JAN', 'FEB', 'MAR', 'APR'))
print(MyList)

#using set as an iterable
MyList = list({'JAN', 'FEB', 'MAR', 'APR'})
print(MyList)

#using string as an iterable
MyList = list('string')
print(MyList)

The output of the above code will be:

['JAN', 'FEB', 'MAR', 'APR']

['JAN', 'FEB', 'MAR', 'APR']

['JAN', 'FEB', 'MAR', 'APR']

['s', 't', 'r', 'i', 'n', 'g']

Example: Using dictionary as iterable

In the below example, list() function is used to create list from a given dictionary.

MyDict = {
  'name': 'John',
  'age': 25,
  'city': 'London'
}
MyList = list(MyDict)
print(MyList)

MyList = list(MyDict.keys())
print(MyList)

MyList = list(MyDict.values())
print(MyList)

The output of the above code will be:

['name', 'age', 'city']

['name', 'age', 'city']

['London', 25, 'John']