"count how many unique rows a DataFrame has" Code Answer's
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return count of unique values pandas
Lovely Locust
on Nov 18, 2020
#TO count repetition of each unique values(to find How many times the same-
# unique value is appearing in the data)
item_counts = df["Your_Column"].value_counts()
#Returns Dictionary => {"Value_name" : number_of_appearences} how to count number of unique values in a column python
Wide-eyed Whale
on Jun 04, 2020
pd.value_counts(df.Account_Type)
Gold 3
Platinum 1
Name: Account_Type, dtype: int64Source: stackoverflow.com
python - count how many unique in a column
Andrea Perlato
on Nov 30, 2020
df['var_1'].nunique() # How many unque values are present in a variableSource: stackoverflow.com
count how many unique rows a DataFrame has
Concerned Crane
on Mar 15, 2021
df = pd.DataFrame(np.random.randint(0,2,size = (10,3)))
df
0 1 2
0 1 1 1
1 1 0 1
2 1 1 1
3 1 0 0
4 1 1 1
5 1 0 1
6 0 0 1
7 0 1 1
8 0 1 0
9 0 0 1
# the only unique rows are : 3, 7 and 8
df.duplicated(keep = False) == False
0 False
1 False
2 False
3 True
4 False
5 False
6 False
7 True
8 True
9 False
dtype: bool
# so to count how many unique rows we have:
sum(df.duplicated(keep = False) = False)
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