Getattr ()() Function in Python

This guide covers getattr ()() function in python with practical context and easy-to-follow details. Use it to understand the subject and apply the information confidently.

The Getattr ()() Function Syntax in Python

getattr(doituong, tenthuoctinh[, macdinh])

Parameters of Getattr Function ()()

The getattr () function has 3 parameters:

• Doituong: Object you want to check.
• Tenthuoctinh: Name of the attribute to search.
• Macdinh: Value returned if the property does not exist.

Note : getattr () function returns:

• The value of the attribute if the object has an input attribute.
• The default value if the object does not have a transfer attribute.
• Exception AttributionError If no Attributes Are found and default values are not specified.

Example 1: How Does the Getattr ()() Function Work?

class Nhanvien:
 tuoi = 23
 ten = "QuachTinh"

nhanvien = Nhanvien()
print('So tuoi la:', getattr(nhanvien, "tuoi"))
print('So tuoi la:', nhanvien.tuoi)

Run the program, the result is:

So tuoi la: 23
So tuoi la: 23

Example 2: Default Value Parameter

class Nhanvien:
 tuoi = 23
 ten = "Adam"

nhanvien = Nhanvien()

# Khi truy?n giá tr? m?c ??nh 
 # Vi?t b?i TipsMake.com
print('Gioi tinh nhan vien la:', getattr(nhanvien, 'gioitinh', 'Nam'))

# Khi không truy?n giá tr? m?c ??nh
print('Gioi tinh nhan vien la:', getattr(nhanvien, 'gioitinh'))

Running the program results in:

Gioi tinh nhan vien la: Nam
AttributeError: 'Nhanvien' object has no attribute 'gioitinh'

The attribute is not in the Nhanvien Class , So when calling the getattr function with the default value of Male , the function will return 'Male', but if it does not pass this parameter as the code below, the program will generate an exception AttributeError.

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