Unique values of Series object in Pandas The unique() function is used to get unique values of Series object. Uniques are returned in order of appearance. Hash table-based unique, therefore does NOT sort. Syntax: Series.unique(self) Returns:ndarray or ExtensionArray The unique values returned ...
Pandas中Series对象的唯一值 unique()函数用于获取Series对象的唯一值。 唯一性按出现顺序返回。基于哈希表的唯一,因此不排序 以NumPy数组形式返回唯一值。如果是扩展数组支持的Series,则返回仅具有唯一值的该类型的新ExtensionArray The unique() function is used to get unique values of Series object. Uniques are...
Pandas中Series对象的唯一值 unique()函数用于获取Series对象的唯一值。 唯一性按出现顺序返回。基于哈希表的唯一,因此不排序 以NumPy数组形式返回唯一值。如果是扩展数组支持的Series,则返回仅具有唯一值的该类型的新ExtensionArray The unique() function is used to get unique values of Series object. Uniques are...
Python Pandas Functions Pandas Series Series.nunique() Function Jinku HuJan 30, 2023 PandasPandas Series Video Player is loading. Current Time0:00 / Duration-:- Loaded:0% Python PandasSeries.nunique()method counts the unique values in the Python PandasSeries. ...
Pandas DataFrame - nunique() function: The nunique() function is used to count distinct observations over requested axis.
The performance difference becomes even more significant as array sizes increase, making NumPy’s unique function the clear choice for data analysis tasks. Check outCreate an Empty Array using NumPy in Python When to Use np.unique() vs. pandas.unique() ...
In case you want to get unique values on multiple columns of DataFrame usepandas.unique()function, using this you can also get unique values of a single column. Syntax: # Syntaxpandas.unique(values) Let’s see an example. Since the unique() function takes values, you need to get the va...
Get Pandas Unique Rows based on Specified Columns We can also get unique rows based on specified columns by setting'keep=False'and specifying the columns in thedrop_duplicates()function, it will return the unique rows of specified columns. ...
Python program to count by unique pair of columns in pandas# Importing pandas package import pandas as pd # Importing numpy package import numpy as np # Creating a dictionary d = { 'id': ['192', '192', '168', '168'], 'user': ['a', 'a', 'b', 'b'] } # Creating a ...
Apply unique function Apply distinct function Result Unique count Distinct count 去重性能验证 数据流向的桑基图如下所示,以帮助理解不同去重方法的数据流向。 sankey-beta A[原始数据] -->|应用unique| B[去重后的数据] A -->|应用distinct| C[去重后的数据] ...