Diagram
AttributeError: ‘dict’ object has no attribute ‘has_key’ error typically occurs when you “try to access the has_key() method on a dictionary, but the has_key() method was deprecated in Python 2.7 and removed in Python 3.”
To fix the AttributeError: ‘dict’ object has no attribute ‘has_key’ error, use the “in operator” instead of “has_key()” method.
Reproduce the error
main_dict = {
'key1': 'value1',
'key2': 'value2'
}
print(main_dict.has_key('key1'))
Output
Here are two ways to fix the error:
- For Python 3, you can use the “in operator”
- For Python 2, you can use the “has_key()” method
Solution 1: Use the “in operator” for Python 3
main_dict = {
'key1': 'value1',
'key2': 'value2'
}
if 'key1' in main_dict:
print('The key exists')
else:
print('The key does not exist')
Output
The key exists
Solution 2: Use the “has_key()” method for Python 2
main_dict = {
'key1': 'value1',
'key2': 'value2'
}
if main_dict.has_key('key2'):
print("Key 'key2' exists in the dictionary.")Output
Key 'key2' exists in the dictionary.The has_key() method was a legacy in older Python versions. It is no longer necessary to use the has_key() method. You can use the “in operator”.
I hope this explanation will fix the error.
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Krunal Lathiya is a seasoned Computer Science expert with over eight years in the tech industry. He boasts deep knowledge in Data Science and Machine Learning. Versed in Python, JavaScript, PHP, R, and Golang. Skilled in frameworks like Angular and React and platforms such as Node.js. His expertise spans both front-end and back-end development. His proficiency in the Python language stands as a testament to his versatility and commitment to the craft.
