pandas set value code example

Example 1: how to assign a new value in a column in pandas dataframe

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

Example 2: change dataframe value by index

x    y
A  NaN  NaN
B  NaN  NaN
C  NaN  NaN

df.at['C', 'x'] = 10

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

df['industry'] = 'yyy'