Pandas groupby with delimiter join

Question

I tried to use groupby to group rows with multiple values.

col val
A  Cat
A  Tiger
B  Ball
B  Bat

import pandas as pd
df = pd.read_csv(\"Inputfile.txt\", s         


        

Answer 1

just try

group = df.groupby(['col'])['val'].apply(lambda x: '-'.join(x))