Creating dataframe from another dataframe and list

Question

I have a list of names like this

names= [Josh,Jon,Adam,Barsa,Fekse,Bravo,Talyo,Zidane]

and i have a dataframe like this

    Number  Names  
0   1       Josh   
1   2       Jon    
2   3       Adam   
3   4       Barsa  
4   5       Fekse  
5   6       Barsa  
6   7       Barsa 
7   8       Talyo  
8   9       Jon  
9   10      Zidane

i want to create a dataframe that will have all the names in names list and the corresponding numbers from this dataframe grouped, for the names that does not have corresponding numbers there should be an asterisk like below

Names Number
Josh  1
Jon   2,9
Adam  3
Barsa 4,6,7
Fekse 5
Bravo *
Talyo 8
Zidane 10

Do we have any built in functions to get this done

Answer 1

You can use GroupBy with str.join , then reindex with your names list:

res = df.groupby('Names')['Number'].apply(lambda x: ','.join(map(str, x))).to_frame()\
        .reindex(names).fillna('*').reset_index()

print(res)

    Names Number
0    Josh      1
1     Jon    2,9
2    Adam      3
3   Barsa  4,6,7
4   Fekse      5
5   Bravo      *
6   Talyo      8
7  Zidane     10