Normalize a group in countplot

import numpy as np
import pandas as pd
import seaborn as sns
sns.set(color_codes=True)

df = sns.load_dataset('titanic')
df.head()

x,y = 'class', 'survived'

(df
.groupby(x)[y]
.value_counts(normalize=True)
.mul(100)
.rename('percent')
.reset_index()
.pipe((sns.catplot,'data'), x=x,y='percent',hue=y,kind='bar'))

Source: stackoverflow.com

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