/usr/bin/env python3"""sequential.py: baseline for comparing sequential, multiprocessing,and threading code for CPU-intensive work."""from time import perf_counterfrom typing import NamedTuplefrom primes import is_prime, NUMBERSclass Result(NamedTuple): # ①prime: boolelapsed: floatdef check(n: ...
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The best part is, decorators can be applied to any function. They make sharing code easy so you don’t repeat yourself! [Slide] Decorators are reminiscent of a paradigm called “Aspect-Oriented Programming,” in which code can be cleverly inserted before and after points of execution. Neat!
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Just adding to http://wiki.python.org/moin/WebProgramming and http://wiki.python.org/moin/WebFrameworks is not the task. It requires some organization and somewhat a selection process in addition to good (probably existing) code v0.1xxx material. I think it would not be overly complex. ...
directory_name='abcd'print('Creating',directory_name)# 创建文件夹os.makedirs(directory_name)file_name=os.path.join(directory_name,'sample_example.txt')print('Creating',file_name)# 写入文件withopen(file_name,'wt')asf:f.write('sample example file')print('Cleaning up')# 删除文件os.unlink(fi...
让我们从强大的with语句开始。 上下文管理器和 with 块 上下文管理器对象存在以控制with语句,就像迭代器存在以控制for语句一样。 with语句旨在简化一些常见的try/finally用法,它保证在代码块结束后执行某些操作,即使代码块由return、异常或sys.exit()调用终止。finally子句中的代码通常释放关键资源或恢复一些临时更改的先...