Python for Data Science - Removing duplicates
2021-06-11 13:05
标签：-- ble segment ted style ati cal ext head Python for Data Science - Removing duplicates 标签：-- ble segment ted style ati cal ext head 原文地址：https://www.cnblogs.com/keepmoving1113/p/14222849.htmlChapter 2 - Data Preparation Basics
Segment 3 - Removing duplicates
import numpy as np
import pandas as pd
from pandas import Series, DataFrame
Removing duplicates
DF_obj = DataFrame({‘column 1‘:[1,1,2,2,3,3,3],
‘column 2‘:[‘a‘,‘a‘,‘b‘,‘b‘,‘c‘,‘c‘,‘c‘],
‘column 3‘:[‘A‘,‘A‘,‘B‘,‘B‘,‘C‘,‘C‘,‘C‘]})
DF_obj
column 1
column 2
column 3
0
1
a
A
1
1
a
A
2
2
b
B
3
2
b
B
4
3
c
C
5
3
c
C
6
3
c
C
DF_obj.duplicated()
0 False
1 True
2 False
3 True
4 False
5 True
6 True
dtype: bool
DF_obj.drop_duplicates()
column 1
column 2
column 3
0
1
a
A
2
2
b
B
4
3
c
C
DF_obj = DataFrame({‘column 1‘:[1,1,2,2,3,3,3],
‘column 2‘:[‘a‘,‘a‘,‘b‘,‘b‘,‘c‘,‘c‘,‘c‘],
‘column 3‘:[‘A‘,‘A‘,‘B‘,‘B‘,‘C‘,‘D‘,‘C‘]})
DF_obj
column 1
column 2
column 3
0
1
a
A
1
1
a
A
2
2
b
B
3
2
b
B
4
3
c
C
5
3
c
D
6
3
c
C
DF_obj.drop_duplicates([‘column 3‘])
column 1
column 2
column 3
0
1
a
A
2
2
b
B
4
3
c
C
5
3
c
D
文章标题：Python for Data Science - Removing duplicates
文章链接：http://soscw.com/index.php/essay/93598.html