Python3基础 dict fromkeys 多个键对应相同的值

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•                    python : 3.7.0
•                           OS : Ubuntu 18.04.1 LTS
  
•                          IDE : PyCharm 2018.2.4
•                      conda : 4.5.11
•            type setting : Markdown

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code

"""
@Author : 行初心
@Date   : 18-9-23
@Blog   : www.cnblogs.com/xingchuxin
@GitHub : github.com/GratefulHeartCoder
"""


def main():
    # formkeys返回一个新的字典

    # 创建一个空字典
    dict_empty = {}
    my_dict = dict_empty.fromkeys((1, 2, 3))
    print(dict_empty)
    print(my_dict)

    # formkeys每个键所对应着的值相同
    my_dict = dict_empty.fromkeys((1, 2, 3), ‘number‘)
    print(my_dict)


if __name__ == ‘__main__‘:
    main()

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result

/home/coder/anaconda3/envs/py37/bin/python /home/coder/PycharmProjects/DataStructure/demo.py
{}
{1: None, 2: None, 3: None}
{1: ‘number‘, 2: ‘number‘, 3: ‘number‘}

Process finished with exit code 0

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resource

• [文档] https://docs.python.org/3/
• [规范] https://www.python.org/dev/peps/pep-0008/
• [规范] https://zh-google-styleguide.readthedocs.io/en/latest/google-python-styleguide/python_language_rules/
• [源码] https://www.python.org/downloads/source/
• [ PEP ] https://www.python.org/dev/peps/
• [平台] https://www.cnblogs.com/

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Python3基础 dict fromkeys 多个键对应相同的值

标签：dev   pychar   http   python3   理解   bash   pytho   转变   python   

原文地址：https://www.cnblogs.com/xingchuxin/p/9696421.html