Python uses the dot operator to access dictionary (dict) data _python

Source: Internet
Author: User

This article illustrates how Python uses the dot operator to access dictionary (dict) data. Share to everyone for your reference. The specific analysis is as follows:

The usual access dictionary uses something like: dict[' name ', and if it's easier to access through Dict.name, the following code customizes a class to provide this method.

Class Dottabledict (Dict):
  def __init__ (self, *args, **kwargs):
    dict.__init__ (self, *args, **kwargs)
    self . __dict__ = self
  def allowdotting (self, state=true):
    if state:
      self.__dict__ = self
    else:
      self.__ dict__ = Dict ()
d = dottabledict ()
d.allowdotting ()
d.foo = ' Bar '
print (d[' foo '])
# bar
Print (D.foo)
# bar
d.allowdotting (state=false)
print (d[' foo '])
# Bar from Http://www.jb51.net
print (D.foo)
# attributeerror: ' Dottabledict ' object has no attribute ' foo '

I hope this article will help you with your Python programming.

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.