我怎样才能旋转这张表以得到它的这种格式？

Question

i have a table like the following:

how can i pivot this in pandas so that i achieve:

i would like to also add this for y3 too but due to space not added above.

Answer 1

Use DataFrame.pivot without values parameter and then flatten MultiIndex :

df1 = df.pivot(index='company', columns='year_active')
#alternative
#df1 = df1.set_index(['company','year_active']).unstack()
df1.columns = df1.columns.map(lambda x: f'{x[0]}_{x[1]}')

Answer 2

df.pivot(index='company', columns='year_active', values=['spend', 'counts', 'distinct_counts])

尝试使用它，这将满足您的要求。