pandas value_counts on dataframe code example
Example 1: value_counts pandas
>>> index = pd.Index([3, 1, 2, 3, 4, np.nan])
>>> index.value_counts()
3.0 2
4.0 1
2.0 1
1.0 1
dtype: int64
Example 2: value_counts pandas condition
print(df)
OUTPUT
A B C
0 1 2 3
1 4 5 6
2 7 8 9
subset_df = df[df["A"] < 3]
column_count = subset_df.count()
print(column_count)
OUTPUT
A 1
B 1
C 1
dtype: int64