Python counter

Counter in python

$ python collections_counter_init.py

Counter({'b': 3, 'a': 2, 'c': 1})
Counter({'b': 3, 'a': 2, 'c': 1})
Counter({'b': 3, 'a': 2, 'c': 1})

Source: pymotw.com

Counter method in python

Counter({'o': 3, ' ': 3, 'u': 3, 'e': 2, 'l': 2, 't': 2, 'r': 2, '9': 2, 'W': 1,
 'c': 1, 'm': 1, 'G': 1, 'T': 1, 'i': 1, 'a': 1, 's': 1, '!': 1})

Source: guru99.com

Counter method in python

Counter({'x': 4, 'y': 2, 'z': 2})

Source: guru99.com

Python counter

sum(c.values())                 # total of all counts
c.clear()                       # reset all counts
list(c)                         # list unique elements
set(c)                          # convert to a set
dict(c)                         # convert to a regular dictionary
c.items()                       # convert to a list of (elem, cnt) pairs
Counter(dict(list_of_pairs))    # convert from a list of (elem, cnt) pairs
c.most_common()[:-n-1:-1]       # n least common elements
c += Counter()                  # remove zero and negative counts

Source: docs.python.org

Counter in python

import collections

print collections.Counter(['a', 'b', 'c', 'a', 'b', 'b'])
print collections.Counter({'a':2, 'b':3, 'c':1})
print collections.Counter(a=2, b=3, c=1)

Source: pymotw.com

Counter in python

from collections import Counter
strl = "aabbaba"
print(Counter(str1))

Counter({'a': 4, 'b': 3})

Source: stackoverflow.com

Similar codes

1 vote325 views1 answer
How to read tuples inside lists python
Python
0 vote356 views1 answer
Python arithmetic operation with list
Python
4 votes292 views1 answer
Python return -1
Python
0 vote357 views2 answers
Most common letter in string python
Python
0 vote360 views5 answers
Django-tool-bar
Python Django
18 votes419 views4 answers
Flask page
Python Flask
0 vote334 views1 answer
.replace pandas in for loop
Python
8 votes284 views2 answers
Python "is"
Python
0 vote351 views1 answer
Pandas print tabulate no index
Python
4 votes332 views1 answer
Import sklearn.metrics from plot_confusion_matrix
Python