create a crosstab bar graph in python

main.py
import pandas as pd
import matplotlib.pyplot as plt

# create a sample dataframe
data = {'gender': ['female', 'male', 'female', 'male', 'female', 'male', 'female', 'male'],
        'diagnosis': ['cancer', 'cancer', 'diabetes', 'diabetes', 'heart disease', 
                      'heart disease', 'cancer', 'diabetes']}
df = pd.DataFrame(data)

# create a crosstab table
ct = pd.crosstab(df.gender, df.diagnosis)

# plot the crosstab table as a bar graph
ct.plot(kind='bar')

# set the graph attributes
plt.title('Diagnosis by Gender')
plt.xlabel('Gender')
plt.ylabel('Count')

# display the graph
plt.show()
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