pivot and unstack in Python

# We have df with three columns: "Country", "Medal" and "Count":

new_df = df.pivot(index = "Country", columns = "Medal", values = "Count").fillna(0)
# new_df has for the index "Contry" and three columns: "Bronze", "Silver" and "Gold" with values

new_df = df.set_index(['Country', 'Medal']).unstack(fill_value = 0)
# new_df has for the index "Contry" and three columns: "Bronze", "Silver" and "Gold" with values

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# table2 has additional column "Year" and we want to unstack the column "Medal"
# we can use only unstack()
table2.groupby(["Country", "Year", "Medal"]).Count.sum().unstack().fillna(0)