Pandas compte les lignes avec valeur
len(df[df['score'] == 1.0])
Wrong Wryneck
len(df[df['score'] == 1.0])
pd.value_counts(df.Account_Type)
Gold 3
Platinum 1
Name: Account_Type, dtype: int64
df = df.groupby('domain')['ID'].nunique()
print (df)
domain
'facebook.com' 1
'google.com' 1
'twitter.com' 2
'vk.com' 3
Name: ID, dtype: int64
dataframe.column.nunique()
df.iloc[1:3, 5:7]