import pandas as pd
data = {
"age": [50, 40, 30, 40, 20, 10, 30],
"qualified": [True, False, False, False, False, True, True]
}
df = pd.DataFrame(data)
newdf = df.sort_values(by='age')
print(newdf)
age qualified 5 10 True 4 20 False 2 30 False 6 30 True 1 40 False 3 40 False 0 50 True