Label encoding column pandas

import seaborn as sns 
df = sns.load_dataset('iris')
df['species'] = df['species'].astype('category').cat.codes
df.head(3)
'''sepal_length	sepal_width	petal_length	petal_width	species
	5.1					3.5			1.4					0.2			0
	4.9					3.0			1.4					0.2			0
	4.7					3.2			1.3					0.2			0'''

Source: grepper.com

Label encoding in pandas

# Import label encoder
from sklearn import preprocessing
  
# label_encoder object knows how to understand word labels.
label_encoder = preprocessing.LabelEncoder()
  
# Encode labels in column 'species'.
df['species']= label_encoder.fit_transform(df['species'])
  
df['species'].unique()

Source: geeksforgeeks.org

Label encoding of a column in python

import seaborn as sns 
df = sns.load_dataset('iris')
def encode(x):
    for i,j in enumerate(df['species'].unique()):
        if x == j:
            return i

df['species'] = df['species'].apply(lambda x:encode(x))

Source: grepper.com

Similar codes

19 votes103 views2 answers
Install selenium python
Python
1 vote125 views1 answer
Python string format_map
Python
1 vote174 views1 answer
Django link home page
Python Django
0 vote126 views1 answer
TypeError: can only concatenate str (not "method") to str
Python
0 vote130 views1 answer
Pandas Get Column Names With NaN
Python
0 vote129 views1 answer
Python temp directory
Python
26 votes126 views1 answer
Shutil move file
Python
51 votes160 views6 answers
Pandas reorder columns
Python
0 vote128 views1 answer
Python multiple items in with statment
Python
2 votes134 views2 answers
Tkinter mainloop
Python