Trong bài viết này, chúng tôi sẽ thảo luận về cách lấy hàng đầu tiên của Pandas DataFrame
Nhận hàng gấu trúc đầu tiên bằng ILOC []
Phương pháp này được sử dụng để truy cập hàng bằng cách sử dụng số hàng. Chúng ta có thể nhận được hàng đầu tiên bằng cách sử dụng 0 chỉ mục.
Ví dụ 1: Mã Python để có được hàng đầu tiên của DataFrame bằng cách sử dụng hàm ILOC []: Python code to get the first row of the Dataframe by using the iloc[] function
Python3
import
pandas as pd
sravan --------------- 0 java Name: subjects, dtype: object0____11
sravan --------------- 0 java Name: subjects, dtype: object2
sravan --------------- 0 java Name: subjects, dtype: object3
sravan --------------- 0 java Name: subjects, dtype: object4
sravan --------------- 0 java Name: subjects, dtype: object5
sravan --------------- 0 java Name: subjects, dtype: object6
sravan --------------- 0 java Name: subjects, dtype: object7
sravan --------------- 0 java Name: subjects, dtype: object8
sravan --------------- 0 java Name: subjects, dtype: object7
id name subjects 0 7058 sravan java0
sravan --------------- 0 java Name: subjects, dtype: object7
id name subjects 0 7058 sravan java2
id name subjects 0 7058 sravan java3
sravan --------------- 0 java Name: subjects, dtype: object3
id name subjects 0 7058 sravan java5
sravan --------------- 0 java Name: subjects, dtype: object5
id name subjects 0 7058 sravan java7
sravan --------------- 0 java Name: subjects, dtype: object7
id name subjects 0 7058 sravan java9
sravan --------------- 0 java Name: subjects, dtype: object7
0 7058 Name: id, dtype: int641
sravan --------------- 0 java Name: subjects, dtype: object7
0 7058 Name: id, dtype: int643
id name subjects 0 7058 sravan java3
sravan --------------- 0 java Name: subjects, dtype: object3
0 7058 Name: id, dtype: int646
sravan --------------- 0 java Name: subjects, dtype: object5
0 7058 Name: id, dtype: int648
sravan --------------- 0 java Name: subjects, dtype: object7
id 7058 name sravan subjects java Name: 0, dtype: object0
sravan --------------- 0 java Name: subjects, dtype: object7
id 7058 name sravan subjects java Name: 0, dtype: object2
sravan --------------- 0 java Name: subjects, dtype: object7
id 7058 name sravan subjects java Name: 0, dtype: object4
id 7058 name sravan subjects java Name: 0, dtype: object5
id 7058 name sravan subjects java Name: 0, dtype: object6
id 7058 name sravan subjects java Name: 0, dtype: object7
id 7058 name sravan subjects java Name: 0, dtype: object8
id 7058 name sravan subjects java Name: 0, dtype: object9
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']0
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']1
id 7058 name sravan subjects java Name: 0, dtype: object8
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']3
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']4
id 7058 name sravan subjects java Name: 0, dtype: object7
id 7058 name sravan subjects java Name: 0, dtype: object8
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']7
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']8
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']1
Output::
id 7058 name sravan subjects java Name: 0, dtype: object --------------- id name subjects 0 7058 sravan java
Ví dụ 2: Nhận hàng đầu tiên cho một cột cụ thể Get the first row for a particular column
Python3
import
pandas as pd
id 7058 name sravan subjects java Name: 0, dtype: object8
sravan 7058 java3
sravan 7058 java4
sravan 7058 java5
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']0
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']1
id 7058 name sravan subjects java Name: 0, dtype: object8
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']3
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']4
id 7058 name sravan subjects java Name: 0, dtype: object7
id 7058 name sravan subjects java Name: 0, dtype: object8
sravan 7058 java3
sravan 7058 java4
sravan 7058 java5
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']8
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']1
Output:
sravan --------------- 0 java Name: subjects, dtype: object
sravan
---------------
0 java
Name: subjects, dtype: object
0____11 sravan
---------------
0 java
Name: subjects, dtype: object
2
id 7058 name sravan subjects java Name: 0, dtype: object8
id 7058 name sravan subjects java Name: 0, dtype: object9
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']0
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']1
Ví dụ 2: Nhận hàng đầu tiên cho một cột cụ thể: Program to get the first row of the dataset.
Python3
import
pandas as pd
sravan --------------- 0 java Name: subjects, dtype: object0____11
sravan --------------- 0 java Name: subjects, dtype: object2
id 7058 name sravan subjects java Name: 0, dtype: object8
id 7058 name sravan subjects java Name: 0, dtype: object9
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']0
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']1
sravan --------------- 0 java Name: subjects, dtype: object3
id name subjects 0 7058 sravan java5
sravan --------------- 0 java Name: subjects, dtype: object5
id name subjects 0 7058 sravan java7
sravan --------------- 0 java Name: subjects, dtype: object7
id name subjects 0 7058 sravan java9
sravan --------------- 0 java Name: subjects, dtype: object7
0 7058 Name: id, dtype: int641
sravan --------------- 0 java Name: subjects, dtype: object7
0 7058 Name: id, dtype: int643
id name subjects 0 7058 sravan java3
sravan --------------- 0 java Name: subjects, dtype: object3
0 7058 Name: id, dtype: int646
sravan --------------- 0 java Name: subjects, dtype: object5
0 7058 Name: id, dtype: int648
sravan --------------- 0 java Name: subjects, dtype: object7
id 7058 name sravan subjects java Name: 0, dtype: object0
sravan --------------- 0 java Name: subjects, dtype: object7
id 7058 name sravan subjects java Name: 0, dtype: object2
sravan --------------- 0 java Name: subjects, dtype: object7
id 7058 name sravan subjects java Name: 0, dtype: object4
id 7058 name sravan subjects java Name: 0, dtype: object5
id 7058 name sravan subjects java Name: 0, dtype: object6
id 7058 name sravan subjects java Name: 0, dtype: object7
id 7058 name sravan subjects java Name: 0, dtype: object8
sravan --------------- 0 java Name: subjects, dtype: object19
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']8
sravan --------------- 0 java Name: subjects, dtype: object21
Output::
id name subjects 0 7058 sravan java
Ví dụ 2: Nhận hàng đầu tiên cho một cột cụ thểGet the first row for a particular column
Python3
import
pandas as pd
sravan --------------- 0 java Name: subjects, dtype: object0____11
sravan --------------- 0 java Name: subjects, dtype: object2
Output:
0 7058 Name: id, dtype: int64
id 7058
name sravan
subjects java
Name: 0, dtype: object
8id 7058
name sravan
subjects java
Name: 0, dtype: object
9[[7058 'sravan' 'java']]
[[7058 'sravan' 'java']]
['sravan']
0[[7058 'sravan' 'java']]
[[7058 'sravan' 'java']]
['sravan']
1
Ví dụ 2: Nhận hàng đầu tiên cho một cột cụ thể
Python3
import
pandas as pd
sravan --------------- 0 java Name: subjects, dtype: object32
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']0
sravan --------------- 0 java Name: subjects, dtype: object34
Output:
id 7058 name sravan subjects java Name: 0, dtype: object
sravan
---------------
0 java
Name: subjects, dtype: object
0____11 sravan
---------------
0 java
Name: subjects, dtype: object
2
id 7058 name sravan subjects java Name: 0, dtype: object8
id 7058 name sravan subjects java Name: 0, dtype: object9
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']0
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']1
Python3
import
pandas as pd
id 7058 name sravan subjects java Name: 0, dtype: object8
sravan --------------- 0 java Name: subjects, dtype: object38
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']8
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']1
id 7058 name sravan subjects java Name: 0, dtype: object8
sravan --------------- 0 java Name: subjects, dtype: object38
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']8
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']1
id 7058 name sravan subjects java Name: 0, dtype: object8
sravan 7058 java3
sravan 7058 java4
sravan --------------- 0 java Name: subjects, dtype: object48
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']8
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']1
Output:
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']
sravan
---------------
0 java
Name: subjects, dtype: object
0____11 sravan
---------------
0 java
Name: subjects, dtype: object
2
id 7058 name sravan subjects java Name: 0, dtype: object8
id 7058 name sravan subjects java Name: 0, dtype: object9
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']0
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']1
Python3
import
pandas as pd
id 7058 name sravan subjects java Name: 0, dtype: object8
sravan --------------- 0 java Name: subjects, dtype: object54
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']0
sravan --------------- 0 java Name: subjects, dtype: object7
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']8
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']1
id 7058 name sravan subjects java Name: 0, dtype: object8
sravan --------------- 0 java Name: subjects, dtype: object54
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']0
sravan --------------- 0 java Name: subjects, dtype: object7
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']0
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']1
id 7058 name sravan subjects java Name: 0, dtype: object8
sravan --------------- 0 java Name: subjects, dtype: object54
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']0
sravan --------------- 0 java Name: subjects, dtype: object7
sravan --------------- 0 java Name: subjects, dtype: object69
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']1
Output:
sravan 7058 java
sravan
---------------
0 java
Name: subjects, dtype: object
0____11 sravan
---------------
0 java
Name: subjects, dtype: object
2
id 7058 name sravan subjects java Name: 0, dtype: object8
id 7058 name sravan subjects java Name: 0, dtype: object9
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']0
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']1
Python3
import
pandas as pd
id 7058 name sravan subjects java Name: 0, dtype: object8
sravan --------------- 0 java Name: subjects, dtype: object74
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']0
sravan --------------- 0 java Name: subjects, dtype: object7
sravan 7058 java4
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']1
id 7058 name sravan subjects java Name: 0, dtype: object8
sravan --------------- 0 java Name: subjects, dtype: object74
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']0
sravan --------------- 0 java Name: subjects, dtype: object7
sravan --------------- 0 java Name: subjects, dtype: object26
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']1
id 7058 name sravan subjects java Name: 0, dtype: object8
sravan --------------- 0 java Name: subjects, dtype: object74
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']0
sravan --------------- 0 java Name: subjects, dtype: object7
sravan 7058 java4
[[7058 'sravan' 'java']] [[7058 'sravan' 'java']] ['sravan']1
Output:
sravan 7058 java