lambda x:len x, lambda x:len x.drop_duplicates
lambda x:len x. There are any references about lambda x:len x in here. you can look below.
lambda x:len x, lambda x:len x.drop_duplicates
lambda x:len x. There are any references about lambda x:len x in here. you can look below.
lambda x:len x
lambda x:len x.drop_duplicates
lambda x:len x, lambda x:len x.drop_duplicates