/Python/Python count number of unique elements in a list

Python count number of unique elements in a list

# Basic syntax:
len(set(my_list))
# By definition, sets only contain unique elements, so when the list
# is converted to a set all duplicates are removed. 

# Example usage:
my_list = ['so', 'so', 'so', 'many', 'duplicated', 'words']
len(set(my_list))
--> 4

# Note, list(set(my_list)) is a useful way to return a list containing
#	only the unique elements in my_list

Source: stackoverflow.com

Similar codes

0 vote148 views1 answer
Counter in sort python
Python
0 vote107 views1 answer
Toy dataframe df simple
Python
18 votes130 views2 answers
Python write to json with indent
Python
14 votes104 views4 answers
How to detect keypress in python
Python
3 votes141 views1 answer
Mouse bottom in pygame
Python
0 vote99 views1 answer
Python remove header
Python
5 votes100 views5 answers
Dict_keys to list
Python
3 votes96 views2 answers
Python fill a list
Python
-1 vote107 views1 answer
Python serial port
Python
6 votes130 views2 answers
Docker flask
Python Flask