If I have two groups, how can I select random 50% of one group and 100% of the other group in python

Asked Oct 05 '22 at 17:18

Active Oct 05 '22 at 19:52

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If I have a datafame with two groups, how can I select a random 50% of the rows associated with one group, and 100% of the rows associated with the other group? This is the code so far, which will give me 50% of both groups. Thanks in advance.

df1=df1.sample(n=len(df1))
grouped = df1.groupby(['group'], as_index=False)
newgroups=grouped.apply(lambda x: x.sample(frac=0.5) if 'group' == 1 else x.sample(frac=1.0))

edited Oct 05 '22 at 19:52

asked Oct 05 '22 at 17:18

jw32022

What have you tried so far? Can you share your code. – griv Oct 05 '22 at 17:22
I have no code - I'm not sure where to begin with this one – jw32022 Oct 05 '22 at 17:33
What data structure do you have? is that dictionary? a database? – ocobacho Oct 05 '22 at 17:33
it's a python dataframe – jw32022 Oct 05 '22 at 17:34
please share the dataframe code – ocobacho Oct 05 '22 at 17:41
I do not have any code to perform this operation currently – jw32022 Oct 05 '22 at 18:01
See [How to make good reproducible pandas examples](https://stackoverflow.com/questions/20109391/how-to-make-good-reproducible-pandas-examples) – fsimonjetz Oct 05 '22 at 18:05

If I have two groups, how can I select random 50% of one group and 100% of the other group in python

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