import pandas as pd

# create a sample dataframe
data = {'Category': ['A', 'A', 'B', 'B', 'B', 'C'], 
'Value': [10, 20, 30, 40, 50, 60]}
df = pd.DataFrame(data)

# compute the mean of each category
mean_df = pd.pivot_table(df, values='Value', 
index='Category', aggfunc='mean').reset_index()

print(mean_df)