A single-column can be made from a pandas data frame that has n columns by selecting one of the n columns and creating a new data frame with only that column. Here is an example code:
import pandas as pd
# create a data frame with three columns
df = pd.DataFrame({'a': [1, 2, 3], 'b': [4, 5, 6], 'c': [7, 8, 9]})
# select a single column and create a new data frame
single_col_df = df['a']
# print the new data frame
print(single_col_df)
Output:
0 1
1 2
2 3
Name: a, dtype: int64
In this example code, the df
data frame has three columns 'a', 'b', and 'c'. The 'a' column is selected by using df['a']
and stored as a new data frame single_col_df
. The output shows that the new data frame has only one column 'a' with the same rows and values as the original 'a' column in the df
data frame.
Asked: 2022-08-21 11:00:00 +0000
Seen: 16 times
Last updated: Jul 13 '22