/Python/Add empty column to dataframe pandas

Add empty column to dataframe pandas

>>> import numpy as np
>>> import pandas as pd
>>> df = pd.DataFrame({"A": [1,2,3], "B": [2,3,4]})
>>> df
   A  B
0  1  2
1  2  3
2  3  4
>>> df["C"] = ""
>>> df["D"] = np.nan
>>> df
   A  B C   D
0  1  2   NaN
1  2  3   NaN
2  3  4   NaN

Source: stackoverflow.com

Add data to empty column pandas

column_names = ["a", "b", "c"]

df = pd.DataFrame(columns = column_names)

df["a"] = [num for num in range(1, 5)]

Similar codes

1 vote178 views1 answer
How to set required drf serialzier
Python
4 votes186 views2 answers
Python get index of substring in liast
Python
1 vote176 views1 answer
Websocket communitation to another pc python
Python
1 vote197 views7 answers
LightGBM
Python
13 votes175 views1 answer
Configure funCtion in tkinter
Python
0 vote173 views2 answers
Create blog in django
Python
15 votes170 views6 answers
Flask install
Python
0 vote175 views1 answer
Renomear colunas pandas
Python
4 votes160 views1 answer
Stack data structure python
Python
0 vote183 views1 answer
Function to sort a list of points based on their x and y-coordinates
Python