python count occurrences in df code example

Example 1: python - count number of occurence in a column

print df
  col1 education
0    a       9th
1    b       9th
2    c       8th

len(df[df['education'] == '9th'])

Example 2: count specific instances in a columb in pandas

df.describe(include=['O']) # give count of unieque categorical