/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

27 votes351 views2 answers
Python date get day
Python
2 votes351 views1 answer
How to multiply a string in python
Python
0 vote388 views3 answers
Convert unix timestamp to datetime python pandas
Python
0 vote378 views1 answer
Selenium exception handling python
Python
0 vote355 views1 answer
How to get the author on discord.py
Python
4 votes341 views1 answer
Check if an application is running python
Python
1 vote330 views1 answer
How to create a fixed size empty array in python
Python
0 vote333 views2 answers
Pytest using tempfile
Python
0 vote332 views1 answer
Pandas show complete string
Python
0 vote336 views1 answer
How to navigate to a sub html script selenium python
Python