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import pandas as pd
data = {
  "name": ["Sally", "Mary", "John", "Monica"],
  "age": [50, 40, 30, 40],
  "qualified": [True, False, False, False]
}
df = pd.DataFrame(data)
newdf = df.set_index('name')
print(newdf)
         age  qualified
  name                 
  Sally   50       True
  Mary    40      False
  John    30      False
  Monica  40      False