/Python/Python - join two columns and transform it as index

Python - join two columns and transform it as index

df = DataFrame({'var_1':['a','b','c'], 'var_2':[1, 2, 3], 'var_3':['apple', 'banana', 'pear']})
cols = ['var_1', 'var_2']    # Set columns to combine
df['combined'] = df[cols].apply(lambda row: ', '.join(row.values.astype(str)), axis=1)

# Define which column is index
df_i = df.set_index('combined') 

# Set the index to None
df_i.index.names = [None]

Source: stackoverflow.com

Similar codes

1 vote277 views1 answer
Python new line character in string
Python
0 vote292 views1 answer
Show which columns in dataframe have NA
Python
10 votes266 views6 answers
Merge two lists python
Python
0 vote276 views3 answers
Join list with comma python
Python
1 vote284 views1 answer
Argparse accept only few options
Python
0 vote287 views1 answer
How to check if a list is a subset of another list
Python
0 vote276 views2 answers
With open
Python
0 vote294 views1 answer
Setting up Colab for Kaggle Downloads
Python
25 votes281 views6 answers
Python datetime to timestamp
Python
0 vote281 views1 answer
Kneighbours regressor sklearn
Python