/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 vote313 views1 answer
Box Plot, Python
Python
0 vote284 views1 answer
Pandas groupby histogram
Python
0 vote316 views1 answer
Simple click counter in python
Python
1 vote302 views1 answer
Sqlalchemy lock row
Python
0 vote316 views1 answer
Python not equal to operation
Python
31 votes319 views3 answers
Add element to list python at index
Python
0 vote299 views1 answer
NotImplementedError: cannot instantiate 'PosixPath' on your system fast ai
Python
0 vote279 views1 answer
Userregisterform
Python
80 votes296 views4 answers
Pip for python
Python
1 vote281 views1 answer
How to clear a pickle file
Python