Series.drop_duplicates

danfo.Series.drop_duplicates(options)     [source]
Parameters
Type
Description
Default
options
Object
keep: "first" | "last", which duplicate value to keep. Defaults to "first".
inplace:  Boolean indicating whether to perform the operation in-place or not. Defaults to false
{
inplace: false
}
Returns: Series
Examples
Drop duplicate by keeping the first occurrence of the duplicate value
Node
1
const dfd = require("danfojs-node")
2
​
3
let data1 = [10, 45, 56, 10, 23, 20, 10, 10]
4
let sf = new dfd.Series(data1)
5
let sf_drop = sf.drop_duplicates()
6
​
7
sf_drop.print()
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Output
1
╔═══╤══════════════════════╗
2
║   │ 0                    ║
3
╟───┼──────────────────────╢
4
║ 0 │ 10                   ║
5
╟───┼──────────────────────╢
6
║ 1 │ 45                   ║
7
╟───┼──────────────────────╢
8
║ 2 │ 56                   ║
9
╟───┼──────────────────────╢
10
║ 4 │ 23                   ║
11
╟───┼──────────────────────╢
12
║ 5 │ 20                   ║
13
╚═══╧══════════════════════╝
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Drop duplicate and keep only the last duplicated value
Node
1
const dfd = require("danfojs-node")
2
​
3
let data1 = [10, 45, 56, 10, 23, 20, 10, 10]
4
let sf = new dfd.Series(data1)
5
let sf_drop = sf.drop_duplicates({keep:"last"})
6
​
7
sf_drop.print()
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Output
1
╔═══╤══════════════════════╗
2
║   │ 0                    ║
3
╟───┼──────────────────────╢
4
║ 1 │ 45                   ║
5
╟───┼──────────────────────╢
6
║ 2 │ 56                   ║
7
╟───┼──────────────────────╢
8
║ 4 │ 23                   ║
9
╟───┼──────────────────────╢
10
║ 5 │ 20                   ║
11
╟───┼──────────────────────╢
12
║ 7 │ 10                   ║
13
╚═══╧══════════════════════╝
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Remove duplicate value in-place
Node
1
const dfd = require("danfojs-node")
2
​
3
let data1 = ["A", "A", "A", "B", "B", "C", "C", "D"]
4
let sf = new dfd.Series(data1)
5
sf.drop_duplicates({inplace:true})
6
​
7
sf.print()
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Output
1
╔═══╤══════════════════════╗
2
║   │ 0                    ║
3
╟───┼──────────────────────╢
4
║ 0 │ A                    ║
5
╟───┼──────────────────────╢
6
║ 3 │ B                    ║
7
╟───┼──────────────────────╢
8
║ 5 │ C                    ║
9
╟───┼──────────────────────╢
10
║ 7 │ D                    ║
11
╚═══╧══════════════════════╝
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Series.dropna

Series.value_counts

Last modified 24d ago

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Contents

Drop duplicate by keeping the first occurrence of the duplicate value

Drop duplicate and keep only the last duplicated value

Remove duplicate value in-place