# Mapping external values to dataframe values in Pandas in Python # Creating new dataframeimport pandas as pd  initial_data = {'First_name': ['Ram', 'Mohan', 'Tina', 'Jeetu', 'Meera'],         'Last_name': ['Kumar', 'Sharma', 'Ali', 'Gandhi', 'Kumari'],         'Age': [42, 52, 36, 21, 23],         'City': ['Mumbai', 'Noida', 'Pune', 'Delhi', 'Bihar']}  df = pd.DataFrame(initial_data, columns = ['First_name', 'Last_name',                                                      'Age', 'City'])  # Create new column using dictionarynew_data = { "Ram":"B.Com",             "Mohan":"IAS",             "Tina":"LLB",             "Jeetu":"B.Tech",             "Meera":"MBBS" }  # combine this new data with existing DataFramedf["Qualification"] = df["First_name"].map(new_data)  print(df)