Add data to empty column 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

Similar codes

0 vote334 views1 answer
Pytorch squeeze
Python
1 vote350 views1 answer
How to define dtype of each column before actually reading csv file
Python
6 votes310 views1 answer
Check 32 or 64 bit python
Python
0 vote337 views1 answer
Assert integer python
Python
0 vote357 views2 answers
How to fix def multiply(a ,b): a*b
Python
0 vote295 views2 answers
Python pandas apply function that returns multiple columns
Python
0 vote340 views2 answers
Python difference between multiprocessing Pool and Threadpool
Python
8 votes317 views1 answer
Negative lookbehind javascript
Python
0 vote335 views2 answers
Friends phoebe
Python
1 vote361 views1 answer
User defined functions python
Python