Answers for "dataframe count values in column"

Find the value counts for the column 'your_column'

df["your_column"].value_counts()

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

pandas count values by column

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