how to add a column to a pandas df
#using the insert function:
df.insert(location, column_name, list_of_values)
#example
df.insert(0, 'new_column', ['a','b','c'])
#explanation:
#put "new_column" as first column of the dataframe
#and puts 'a','b' and 'c' as values
#using array-like access:
df['new_column_name'] = value
#df stands for dataframepandas add value to excel column and save
import pandas as pd;
df = pd.read_excel("./YourExcel.xlsx");
YourDataInAList = [12.34,17.56,12.45];
df = df.append({"ColumnName": YourDataInAList}, ignore_index=True)
df.to_excel("./YourNewExcel.xlsx",index=False);Copyright © 2021 Codeinu
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