pandas add value to column code example

Example 1: 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 dataframe

Example 2: how to assign a new value in a column in pandas dataframe

df = df.assign(industry='yyy')

Example 3: how to assign a new value in a column in pandas dataframe

df['industry'] = 'yyy'