/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 vote236 views1 answer
Travis ci .yml for python
Python
0 vote217 views1 answer
Python sort array custom comparator
Python
2 votes223 views2 answers
How to open a different version of python on my macc
Python
1 vote256 views1 answer
Spike python
Python
0 vote207 views1 answer
Python pandas get labels
Python
0 vote223 views1 answer
Python change recursion depth
Python
0 vote227 views1 answer
How to define a functio in python
Python
0 vote238 views1 answer
Create endpoint in python
Python
1 vote240 views1 answer
Python custom class indexing
Python
5 votes252 views3 answers
Convert json to csv
Python