Home Backend Development Python Tutorial How to Convert Dict Keys from 'dict_keys' to List in Python 3?

How to Convert Dict Keys from 'dict_keys' to List in Python 3?

Nov 14, 2024 pm 09:51 PM

How to Convert Dict Keys from 'dict_keys' to List in Python 3?

Converting Dict Keys from 'dict_keys' to List

In Python 2.7, obtaining dictionary keys as a list was straightforward using newdict.keys(). However, in Python 3.3 and later, this method returns a dict_keys object instead of a list.

To obtain a plain list of keys with Python 3, you can convert the dict_keys object using list(newdict.keys()). This will generate a list of keys that can be manipulated as needed.

Should You Convert?

While converting the dict_keys object to a list is possible, it's worth considering whether it's necessary. In most cases, the dict_keys object behaves similarly to a list. It supports iteration, allowing you to access and process keys efficiently.

For example:

for key in newdict.keys():
    print(key)
Copy after login

The above code will iterate over the keys of the newdict dictionary and print each key.

Extending Dict Keys

It's important to note that the dict_keys object does not support insertion of new keys using newdict[k] = v. If you need to add new keys to your dictionary, use the standard dict methods such as update() or setdefault().

The above is the detailed content of How to Convert Dict Keys from 'dict_keys' to List in Python 3?. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot Article Tags

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

How Do I Use Beautiful Soup to Parse HTML? How Do I Use Beautiful Soup to Parse HTML? Mar 10, 2025 pm 06:54 PM

How Do I Use Beautiful Soup to Parse HTML?

Image Filtering in Python Image Filtering in Python Mar 03, 2025 am 09:44 AM

Image Filtering in Python

How to Download Files in Python How to Download Files in Python Mar 01, 2025 am 10:03 AM

How to Download Files in Python

How to Use Python to Find the Zipf Distribution of a Text File How to Use Python to Find the Zipf Distribution of a Text File Mar 05, 2025 am 09:58 AM

How to Use Python to Find the Zipf Distribution of a Text File

How to Work With PDF Documents Using Python How to Work With PDF Documents Using Python Mar 02, 2025 am 09:54 AM

How to Work With PDF Documents Using Python

How to Cache Using Redis in Django Applications How to Cache Using Redis in Django Applications Mar 02, 2025 am 10:10 AM

How to Cache Using Redis in Django Applications

How to Perform Deep Learning with TensorFlow or PyTorch? How to Perform Deep Learning with TensorFlow or PyTorch? Mar 10, 2025 pm 06:52 PM

How to Perform Deep Learning with TensorFlow or PyTorch?

Introducing the Natural Language Toolkit (NLTK) Introducing the Natural Language Toolkit (NLTK) Mar 01, 2025 am 10:05 AM

Introducing the Natural Language Toolkit (NLTK)

See all articles