learning python 5th edition

of asynchronous IO later. 4 5 Import Time6 7 8 defConsumer (name):9 Print('%s prepare to eat steamed buns.'%name)Ten whileTrue: OneBaozi =yield #yield A Print('Bun [%s] came, eaten by [%s]'%(baozi,name)) - - the defproducer (name): -c = Consumer ('A')#turning a function into a generator -C2 = Consumer ('B') -C.__next__()#call the generator for the first time +C2.__next__() - Print('Lao Tzu began to eat steamed buns! ') + forIinchRange (10): ATime.sleep (1) at

A tkinter:tkinter is a python-backed library of TK, and Python code calls the native GUI (TKL language development) provided by the Tkinter->tk-> operating system to complete the interface development without the need to install any third-party programs. Tkinter Tutorial Second Edition Https://link.zhihu.com/?target=http%3A//pan.baidu.com/s/1hr6ortE,

: https://www.python.org/, version selectable 3.6 or 2.71.2 Compilation Environment Pycharm: Https://www.jetbrains.com/pycharm, select the corresponding Community Edition (free, beginner recommended) or Pro versionAlternatively, you can use the Python-only compilation system idle without downloading. There are other third-party compiler programs such as Sublime Text3, eclipse,notepad++, etc.1.3 Anaconda,wxp

Full Stack Engineer Development Manual (author: Shangpeng) Python Data Mining Series tutorials GBDT's algorithm reference: https://blog.csdn.net/luanpeng825485697/article/details/79766455 Gradient boosting is a boosting method, and its main idea is that each time a model is established, the gradient descent direction of the model loss function is established. Loss function is the performance of evaluation model (generally fit degree + regular term), t

, the 100,000th character of Unicode has been adopted and recognized as one of the criteria), a set of code diagrams that can be used as a visual reference, a set of encoding methods and a set of standard character encodings, a set containing superscript words, Enumeration of character attributes such as subscript characters. The Unicode organization (the Unicode Consortium) is operated by a non-profit organization and dominates the subsequent development of Unicode, with the goal of replacing t

not" # class Favor (models. ModEL): # user = models. ForeignKey (to= ' UserInfo ', to_field= ' nid ', on_delete=true) # news = models. ForeignKey (to= ' News ', to_field= ' id ', on_delete=true) # comment Form class Comment (models. Model): News = models. ForeignKey (to= ' News ', to_field= ' id ', on_delete=true) user = models. ForeignKey (to= ' UserInfo ', to_field= ' nid ', on_delete=true) content = models. Charfield (max_length=150) CTime = models. Datetimefield (auto_now_add=true) device =