count_row = df.shape[0] # gives number of row count count_col = df.shape[1] # gives number of col count
df['column_name'].value_counts()
>>> df.count(axis='columns') 0 3 1 2 2 3 3 3 4 3 dtype: int64
df['freq'] = df.groupby('myvar')['myvar'].transform('count')
df = pd.DataFrame({'a':list('abssbab')}) df.groupby('a').count()