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This article introduces the knowledge of "the use of the Python_Flask converter and the method of customizing the converter". In the operation of practical cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Directory default converter custom converter definition method 1. Create a converter class and save the regular expression 2. Inform the Flask application 3. Define the use where the converter is used

Default converter

From flask import Flaskapp = Flask (_ _ name__) # / user/123@app.route ('/ users/') def get_users_data (user_id): return 'get user {}' .format (user_id)

This 123 is the string str

From flask import Flaskapp = Flask (_ _ name__) # / user/123@app.route ('/ users/') def get_users_data (user_id): return 'get user {}' .format (user_id)

Custom converter definition method

The custom converter mainly takes three steps

1. Create a converter class to save the regular expression when matching

From werkzeug.routing import BaseConverterclass MobileConverter (BaseConverter): "Mobile phone number format"regex = rang 1 [3-9]\ d {9}]'

Note that the regex name is fixed

two。 Inform the Flask application of the custom converter

App = Flask (_ _ name__) # add the custom converter to the converter dictionary and specify that the converter is used with the name: mobileapp.url_map.converters ['mobile'] = MobileConverter

3. Define the use where the converter is used

@ app.route ('/ sms_codes/') def send_sms_code (mob_num): return 'send sms code to {}' .format (mob_num) "the use of the Python_Flask converter and how to customize the converter" ends here. Thank you for reading. If you want to know more about the industry, you can follow the website, the editor will output more high-quality practical articles for you!

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