Adding a New Empty Column to a pandas DataFrame in Python (Example Code)
In this Python tutorial you’ll learn how to append a new empty column to a pandas DataFrame.
Preparing the Example
import pandas as pd # Load pandas library |
import pandas as pd # Load pandas library
my_df = pd.DataFrame({'A':range(1, 5), # Construct new pandas DataFrame 'B':['a', 'c', 'a', 'b'], 'C':range(15, 11, - 1)}) print(my_df) # A B C # 0 1 a 15 # 1 2 c 14 # 2 3 a 13 # 3 4 b 12 |
my_df = pd.DataFrame({'A':range(1, 5), # Construct new pandas DataFrame 'B':['a', 'c', 'a', 'b'], 'C':range(15, 11, - 1)}) print(my_df) # A B C # 0 1 a 15 # 1 2 c 14 # 2 3 a 13 # 3 4 b 12
Example: Adding a Column with Empty String to a pandas DataFrame
my_df['D'] = '' # Append empty string variable print(my_df) # A B C D # 0 1 a 15 # 1 2 c 14 # 2 3 a 13 # 3 4 b 12 |
my_df['D'] = '' # Append empty string variable print(my_df) # A B C D # 0 1 a 15 # 1 2 c 14 # 2 3 a 13 # 3 4 b 12
Related Articles & Further Resources
Here, you may find some further resources on topics such as naming data and data conversion.