Indexes and Columns
You can change DataFrame' indexes likewise Series' indexes (by assigning necessary list to the .index attribute of DataFrame).
12345678# Importing library import pandas as pd # Creating DataFrame df = pd.DataFrame([[1, 2], [3, 4], [5, 6]]) # Set indexes df.index = ['first', 'second', 'third'] print(df)
You can set indexes when defining the DataFrame by specifying the index parameter. For instance,
123456# Importing library import pandas as pd # Creating DataFrame with indexes df = pd.DataFrame([[1, 2], [3, 4], [5, 6]], index = ['first', 'second', 'third']) print(df)
Also there are two ways to set the columns names: by assigning list of names to the columns attribute, or specifying the columns parameter.
12345678910# Importing library import pandas as pd # Creating DataFrame with indexes df = pd.DataFrame([[1, 2], [3, 4], [5, 6]], columns = ['col1', 'col2'], index = ['first', 'second', 'third']) print(df) # Changing columns' names df.columns = ['Column1', 'Column2'] print(df)
If you need to change columns' names or indexes of existing dataframe, use the approach with reassigning (
.index,.columnsattributes).
Tack för dina kommentarer!
Fråga AI
Fråga AI
Fråga vad du vill eller prova någon av de föreslagna frågorna för att starta vårt samtal
Awesome!
Completion rate improved to 3.33Indexes and Columns
Svep för att visa menyn
You can change DataFrame' indexes likewise Series' indexes (by assigning necessary list to the .index attribute of DataFrame).
12345678# Importing library import pandas as pd # Creating DataFrame df = pd.DataFrame([[1, 2], [3, 4], [5, 6]]) # Set indexes df.index = ['first', 'second', 'third'] print(df)
You can set indexes when defining the DataFrame by specifying the index parameter. For instance,
123456# Importing library import pandas as pd # Creating DataFrame with indexes df = pd.DataFrame([[1, 2], [3, 4], [5, 6]], index = ['first', 'second', 'third']) print(df)
Also there are two ways to set the columns names: by assigning list of names to the columns attribute, or specifying the columns parameter.
12345678910# Importing library import pandas as pd # Creating DataFrame with indexes df = pd.DataFrame([[1, 2], [3, 4], [5, 6]], columns = ['col1', 'col2'], index = ['first', 'second', 'third']) print(df) # Changing columns' names df.columns = ['Column1', 'Column2'] print(df)
If you need to change columns' names or indexes of existing dataframe, use the approach with reassigning (
.index,.columnsattributes).
Tack för dina kommentarer!
