pandas select distinct values in columns code example

Example 1: how to get distinct value in a column dataframe in python

df.column.unique()

Example 2: distinct rows in this DataFrame

# distinct rows in this DataFrame

df.distinct().count()
# 2

Example 3: pandas count distinct values in column

#column name ISSDTM
pd.to_datetime(df.ISSDTM, errors='coerce').dt.year

#result
0    2013
1    2013
2    2009
3    2009
Name: ISSDTM, dtype: int64