import pandas
df = pd.DataFrame({
'Age':[33,44,22,44,55,22],
'Income':['Low','Low','High','Medium','Medium','High']})
df
df.Income=df.Income.map({'Low':1,'Medium':2,'High':3})
df
Alternatively pandas column value +1
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Origin blog.csdn.net/sinat_23971513/article/details/105268114
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