pandas count value code example

Example 1: count values 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

Example 2: pandas count rows in column

>>> df.count(axis='columns')
0    3
1    2
2    3
3    3
4    3
dtype: int64

Example 3: frequency unique pandas

df.stack().value_counts()

Example 4: pandas count values by column

df = pd.DataFrame({'a':list('abssbab')})
df.groupby('a').count()

Example 5: count_values in python

idx.value_counts()

Example 6: relativefrequencies of the unique values pandas

df.value_counts(normalize=True)