/Python/How to Find Unique Values in a Column in Pandas

How to Find Unique Values in a Column in Pandas

Dataframe unique values in each column

for col in df:
    print(df[col].unique())

Source: stackoverflow.com

How to Find Unique Values in a Column in Pandas

# import pandas library
import pandas as pd

# create pandas DataFrame
df = pd.DataFrame({'fruits': ['orange', 'mango', 'apple', 'grapes', 'orange', 'mango'],
                   'price': ['40', '80', '30', '40', '30', '80'],
                   'quantity': ['200', '300', '300', '400', '200', '800']
                   })

# get the unique value of column fruits
print(df.fruits.unique())

Source: itsmycode.com

Get list of unique values in pandas column

a = df['column name'].unique() #returns a list of unique values

Find and count unique values of a single column in Pandas DataFrame

# import pandas library
import pandas as pd

# create pandas DataFrame
df = pd.DataFrame({'fruits': ['orange', 'mango', 'apple', 'grapes', 'orange', 'mango'],
                   'price': ['40', '80', '30', '40', '30', '80'],
                   'quantity': ['200', '300', '300', '400', '200', '800']
                   })

# get the count unique values of column fruits
print(df.fruits.value_counts())

Source: itsmycode.com

Get count of unique values in column pandas

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

Source: stackoverflow.com

Find unique values in all columns in Pandas DataFrame

# import pandas library
import pandas as pd

# create pandas DataFrame
df = pd.DataFrame({'fruits': ['orange', 'mango', 'apple', 'grapes', 'orange', 'mango'],
                   'price': ['40', '80', '30', '40', '30', '80'],
                   'quantity': ['200', '300', '300', '400', '200', '800']
                   })

# get the unique value of all columns
for col in df:
  print(df			
							
		.unique())

Source: itsmycode.com

Similar codes

0 vote138 views1 answer
Matplotlib savefig legend cut off
Python
3 votes135 views1 answer
Normalize values between 0 and 1 python
Python
4 votes212 views1 answer
How to make sun as first day in calendar python
Python
0 vote133 views1 answer
How to get the memory location of a varible in python
Python
10 votes120 views3 answers
Python infinite loop
Python
0 vote169 views1 answer
Django require_POST body
Python Django
0 vote149 views1 answer
Hexing floats
Python
0 vote126 views1 answer
Flask gunicorn get ip
Python
0 vote124 views1 answer
Waitkey in python
Python
0 vote134 views1 answer
Conversion un type image en array python
Python