Python built-in functions are functions provided by python for you to use directly, such as print and input, etc. As of python version 3.6.2, a total of 68 built-in functions are provided. Today, let’s take a look at python’s built-in functions as shown in the figure below.
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For a Python list or tuple object, we can go through it via a for loop, which we call iteration. In Python, iteration is done by for… in, whereas in many languages, such as C, iteration lists are done by subscripts, such as below Java code.
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In the process of writing websites, we often need to implement some basic functions, such as add, delete, update and select data. Python Django encapsulates all these complex logic things into methods for us to use it directly. The experience in the process of using them is simple enough. This article will show you some
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In one word, if a function can accept another function as input parameter, such a function is called a higher order function. Python provide several higher order functions to simplify your coding, this article will introduce them with examples.
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1. Slice List. Taking a partial element from a list or tuple is a very common operation. For example, how to take the first three elements from below list? >>> L = [‘Richard’, ‘Tom’, ‘Jerry’, ‘Jackie’, ‘Kevin’] You can take elements from above list like below. >>> [L[0], L[1], L[2]] [‘Richard’, ‘Tom’, ‘Jerry’] But when you
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Yagmail is a python library which can make sending email simple and easy. This article will show you examples about how to use yagmail to send emails to multiple receivers with multiple attachments, it also shows the difference between yagmail and general python sending email method.
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Model is generally used to represent database table data. It contains the basic fields and behaviors of the data you are storing. Django provides structured data processing and operation processing for your network applications through the abstract model layer (models). Database-related code is generally written in models.py. Django supports SQLite3, MySQL, PostgreSQL and other databases,
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SQLite is an embedded database which store all database data in a file. Because SQLite itself is written in C and small in size, it is often integrated into various applications, such as iOS and Android Apps. Python has built-in SQLite3 support, so you don’t need to install anything to use SQLite in Python.
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File manipulation is a common scenario in development, so how to judge whether an object is a file object or not? Here we summarise two methods .
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To receive an email you can write an MUA( Mail User Agent ) as the client, and retrieve the email from MDA ( Mail Delivery Agent ) to the user’s computer or mobile phone. The most commonly used protocol for receiving mail is the POP protocol. The current version number is 3, commonly known as
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