File "err.py", line 11, in <module> main() File "err.py", line 9, in main bar('0') File "err.py", line 6, in bar return foo(s) * 2 File "err.py", line 3, in foo return 10 / int(s) ZeroDivisionError: integer division or modulo by zero 出错并不可怕,可怕的是不知道哪...
事实上,python有一个简单而清晰的规则:当进入一个新的名字空间,或者说作用域时,我们就算是进入了一个新的Code Block了。 比如对于下面这个demo,编译完之后总共会创建3个PyCodeObject对象,一个是对应demo.py整个文件的,一个是对应class A所代表的Code Block,而最后一个是对应 def func所代表的Code Block。 使用pyt...
flash_home_path_master = None flash_home_path_slave = None item_str = lambda key, value: f'<{key}>{value}</{key}>' log_info_dict = {LOG_INFO_TYPE : logging.info, LOG_WARN_TYPE : logging.warning, LOG_ERROR_TYPE : logging.error} class OPIExecError(Exception): """OPI executes ...
``` # Python script for unit testing with the unittest module import unittest def add(a, b): return a + b class TestAddFunction(unittest.TestCase): def test_add_positive_numbers(self): self.assertEqual(add(2, 3), 5) def test_add_negative_numbers(self): self.assertEqual(add(-2, ...
class FOCController: def __init__(self, p, i): self.Kp = p # 比例系数 self.Ki = i # 积分系数 self.id_error_sum = 0.0 # d轴电流误差累积 self.iq_error_sum = 0.0 # q轴电流误差累积 def control(self, vd, vq, id_ref, iq_ref, id_fb, iq_fb): ...
你可以通过这种看似没有必要的代码组织方式来提高效率： # Example #1 class FastClass: def do_stuff(self): temp = self.value # this speeds up lookup in loop for i in range(10000): ... # Do something with `temp` here # Example #2 import random def fast_function(): r = random.random ...
Class Statistics : Classes 0 1 2 ACC(Accuracy) 0.83333 0.75 0.58333 AUC(Area under the ROC curve) 0.88889 0.61111 0.58333 AUCI(AUC value interpretation) Very Good Fair Poor F1(F1 score - harmonic mean of precision and sensitivity) 0.75 0.4 0.54545 ...
<class 'pyodbc.Error'> returned a result with an error set Traceback (most recent call last): File "/Users/user/.pyenv/versions/3.7.5/lib/python3.7/encodings/utf_16_le.py", line 16, in decode return codecs.utf_16_le_decode(input, errors, True) UnicodeDecodeError: 'utf-16-le' codec...
Visual Studio Code IDE 企业级应用集成 GraphQL 杂项 BML Codelab基于JupyterLab 全新架构升级,支持亮暗主题切换和丰富的AI工具,详见使用说明文档。 严格来讲,python的内置库被称为内置函数,他指的是在python中不需要import导入就可以使用的一些函数,它们是解释器的一部分。而python标准库则指随着pyhon安装的时候默认自...
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