Python

The example in this article describes how Python processes csv data. Share to everyone for your reference. Specifically as follows: Python code: Copy Code code as follows: #coding =utf-8 __author__ = ' Dehua.li ' From datetime import

After years of using Python, I stumbled across features and features that we didn't know about before. Some can be said to be very useful, but not fully utilized. With that in mind, I edited some of the python features you should know about.

Like many languages, Python is divided into "copy" Ways of simple assignments, shallow copies, and deep copies. In the learning process, the initial understanding of the shallow copy is very vague. But after a series of experiments, I found a

This article illustrates the way Python reads ID3 information in MP3. Share to everyone for your reference. The specific analysis is as follows: PYID3 is not good to use, often have not known.Mutagen good, but the default band EASYID3 will not read

The example of this article is about Python's method of acquiring image Exif information through Exifread module. Share to everyone for your reference. The specific analysis is as follows: Python can get picture exif information through Exifread

This example describes how Python lets a picture sort by the creation time in EXIF information. Share to everyone for your reference. The specific analysis is as follows: We often take photos from different devices, such as cameras, cell phones,

This example describes how Python detects whether a remote UDP port is open. Share to everyone for your reference. The implementation methods are as follows: Copy Code code as follows: Import socket Import threading Import time

parsing XML files in Python also has two ways of Dom and sax, and here's how to parse XML using DOM, which is the DOM generates an XML file, and the next article goes on to explain the DOM parsing xml file. In generating XML files, we use the

Brief introduction This is a brief tutorial on how to put a lot of data into a limited amount of memory. When working with customers, they sometimes find that their databases are actually just a CSV or Excel file warehouse, and you can only work

I have recently been involved in Python bytecode related work and would like to share some of this experience with you. To be more precise, I am participating in the work of the 2.6 to 2.7 version of the CPython interpreter byte code. Python is a

It would be unwise to begin the process of optimization without first thinking about this Knuth famous saying. However, you quickly write code to add some features, it can be ugly, you need to pay attention to. This article is prepared for this time.

Function: String.Join () There are join () and Os.path.join () two functions in Python, which can be specified as follows:Join (): An array of connection strings. Generates a new string with the string, tuple, and element in the list with the

This article illustrates how python randomly allocates user-agent for each request when using Scrapy to collect data. Share to everyone for your reference. The specific analysis is as follows: This method can be used each time to change the

We'd better start with the hardest question: "What exactly is functional programming (FP)?" "One answer might say that FP is what you do when you're programming with Lisp, Scheme, Haskell, ML, OCAML, clean, Mercury, Erlang (or some other) language."

Earlier this morning, in my planet Python source, I read an interesting article, "Developing cardiac: Cardboard computer (developing upwards:CARDIAC:The cardboard Computer)", It's about the cardboard computer called cardiac. Some of my followers and

I often need to do asynchronous request work with Python and SOLR. There is a block of code blocking the SOLR HTTP request until the first one completes before the second request is executed, the code reads as follows: Import requests

The example in this article tells the Python dictionary get () method usage. Share to everyone for your reference. The specific analysis is as follows: If we need to get a dictionary value, we have two methods, one is through dict[' key ', and the

Tornado 4.0 has been released for a long time, and the new version has widely applied the Future feature. We have now upgraded the Tornado to the latest version, and have also used a lot of the coprocessor features. A long time no update blog,

Introduction I've been blind to the idea that Python will never have a memory leak, but seeing the online project growing memory footprint as the running time grows, I realized that my program was leaking memory before the logging module had been

When defining a function, we determine the name and position of the parameter, and the interface definition of the function is complete. For the caller of the function, it's enough to know how to pass the correct arguments, and what values the