Value_counts() in pandas

>>> index = pd.Index([3, 1, 2, 3, 4, np.nan])
>>> index.value_counts()
3.0    2
4.0    1
2.0    1
1.0    1
dtype: int64

Source: pandas.pydata.org

Df.value_counts to dataframe

df = df.value_counts().rename_axis('unique_values').reset_index(name='counts')
print (df)
   unique_values  counts
0              2       3
1              1       2

Source: stackoverflow.com

Plot value counts pandas


df.letters.value_counts().sort_values().plot(kind = 'barh')

Source: stackoverflow.com

Count unique pandas

df.nunique()

Count values python

from collections import Counter
values=np.ones(10)
Counter(values)

Use of value_counts in python

use of value_counts()

Similar codes

0 vote145 views1 answer
Turtle screen
Python
0 vote146 views1 answer
Add halt for 10 seconds in selenium python
Python
0 vote148 views1 answer
Python enum declare
Python
0 vote142 views1 answer
How to define a functio in python
Python
0 vote101 views1 answer
Runpy.py", line 194, in _run_module_as_main return _run_code(code, main_globals, None,
Python
0 vote153 views1 answer
Python how to acquire the html code for a website
Python
8 votes219 views1 answer
How to do collision detection in pygame
Python
9 votes168 views6 answers
Text to speech python
Python
0 vote175 views2 answers
How to get a specific field in django
Python
1 vote151 views1 answer
Save np array as mat file
Python