Hellomengke的博客

首先要明确需求是什么？ 实现这些需求可能会用到哪些知识？（线程，什么库…） 标志位的使用，flag，这个很好用 字典封装对象，实例的封装。

set 可用来list去重 lambda的使用 A 父类 B 子类 B.fun(), 如果在B中找不到的话，会去A中找，但是在A中如果执行别的function，会优先在B中找，找不到才会去A中找。 ...

os.walk() returns three values on each iteration of the loop: The name of the current folder A list of folders in the current folder A list of files in the current folder

If your CSV files doesn’t have column names in the first line, you can use the names optional parameter to provide a list of column names. You can also use this if you want to override the column name...

*args 并不是往里传个列表。直接传就好。 # sum_integers_args.py def my_sum(*args): result = 0 # Iterating over the Python args tuple for x in args: result += x return result print(my_sum(1, 2...

It’s important to note that a class just provides structure—it’s a blueprint for how something should be defined, but it doesn’t actually provide any real content itself. The Animal() class may speci...

A daemon thread will shut down immediately when the program exits. If a program is running Threads that are not daemons,then the program will wait for those threads to complete before it terminates. ...

Slow down. The more you understand, the less you have to memorize. Don’t just read. Stop and think. When the book asks you a question, don’t just skip to the answer. Imagine that someone really is a...

Creating a Calculator With Python and PyQt In this section, you’re going to develop a calculator using the Model-View-Controller (MVC) design pattern. This pattern has three layers of code, each with ...

QWidget is the base class for all user interface objects or widgets. QGridLayout 中的参数，前两个：row,col 后两个：rowSpan,columnSpan FormLayout layout.addRow('Name:', QLineEdit()) If your slot functio...

(一)：List 我觉得在正式开始之前先应该回顾一下，自己知道哪些和list相关的知识，或者说自己用到了哪些特性。 1.创建 a = [] a = list() 2.添加 a.append(elem) a.insert(index, elem) 3.删除 a.pop(index) a.remove(elem)(does not return it) 4.排序 a.sort() sorte...