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: int64count 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: int64pandas count values by column
df = pd.DataFrame({'a':list('abssbab')})
df.groupby('a').count()relativefrequencies of the unique values pandas
df.value_counts(normalize=True)pandas count
>>> df.set_index(["Person", "Single"]).count(level="Person")
Age
Person
John 2
Lewis 1
Myla 1count values python
from collections import Counter
values=np.ones(10)
Counter(values)Copyright © 2021 Codeinu
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