Python | Program to convert String to a List
In this program, we will try to convert a given string to a list, where spaces or any other special characters, according to the user’s choice, are encountered. To do this we use the split() method in string.
string.split("delimiter")Examples:
Input : "Geeks for Geeks" Output : ['Geeks', 'for', 'Geeks']
Input : "Geeks-for-Geeks" Output : ['Geeks', 'for', 'Geeks']
Method#1: Using split() method
The split method is used to split the strings and store them in the list. The built-in method returns a list of the words in the string, using the “delimiter” as the delimiter string. If a delimiter is not specified or is None, a different splitting algorithm is applied: runs of consecutive whitespace are regarded as a single separator, and the result will contain no empty strings at the start or end if the string has leading or trailing whitespace.
Example 1A:
Python3
# Python code to convert string to listdef Convert(string): li = list(string.split(" ")) return li# Driver codestr1 = "Geeks for Geeks"print(Convert(str1)) |
['Geeks', 'for', 'Geeks']
Example 1B:
Python3
# Python code to convert string to listdef Convert(string): li = list(string.split("-")) return li# Driver codestr1 = "Geeks-for-Geeks"print(Convert(str1)) |
['Geeks', 'for', 'Geeks']
Method#2: Using string slicing
Python3
# Python code to convert string to list character-wisedef Convert(string): list1 = [] list1[:0] = string return list1# Driver codestr1 = "ABCD"print(Convert(str1)) |
['A', 'B', 'C', 'D']
Method#3: Using re.findall() method
This task can be performed using regular expression. We can use the pattern to match all the alphabet and make list with all the matched elements.
Python3
# Python code to convert string to list character-wise# Using re.findall methodimport re# Function which uses re.findall method to convert string to list character wisedef Convert(string): return re.findall('[a-zA-Z]', string) # Driver codestr1="ABCD"print("List of character is : ",Convert(str1)) |
List of character is : ['A', 'B', 'C', 'D']
Method #4: Using list comprehension
Python3
s="Geeks"x=[i for i in s]print(x) |
['G', 'e', 'e', 'k', 's']
Method #5: Using enumerate function
Python3
s="geeks"x=[i for a,i in enumerate(s) ]print(x) |
['g', 'e', 'e', 'k', 's']
Method #6: Using JSON
Python3
import jsonstringA = '["geeks", 2,"for", 4, "geeks",3]'# Type checkres = json.loads(stringA)# Resultprint("The converted list : \n",res) |
The converted list : ['geeks', 2, 'for', 4, 'geeks', 3]
Method #7: Using ast.literal
Python3
import ast# initializing string representation of a listini_list = '["geeks", 2,"for", 4, "geeks",3]'# Converting string to listres = ast.literal_eval(ini_list)# printing final result and its typeprint(res)print(type(res)) |
['geeks', 2, 'for', 4, 'geeks', 3] <class 'list'>
Method #8: Using lambda function
Python3
s="Geeks"x=list(filter(lambda i:(i in s),s))print(x) |
['G', 'e', 'e', 'k', 's']
Method #9: Using map()
Python3
s="Geeks"x=list(map(str,s))print(x) |
['G', 'e', 'e', 'k', 's']
Method#10: Using list()
Python3
s = "Geeks"x = list(s)print(x) |
Output:
['G', 'e', 'e', 'k', 's']
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