Python: Random selection per group

Question

Say that I have a dataframe that looks like:

Name Group_Id
AAA  1
ABC  1
CCC  2
XYZ  2
DEF  3 
YYH  3

How could I randomly select one (or m

Answer 1

A very pandas-ish way:

takesamp = lambda d: d.sample(n)
df = df.groupby('Group_Id').apply(takesamp)