a variable in your program code is simply a pointer to the address of the object in memory. When a variable is used in a program, the process will read the value from memory and operate on it.
(FILE_TYPE_CFG) if nextcfg is not None: self._del_startup_config_file() sleep(5) except Exception as reason: logging.error(reason) self.reset_startup_info(slave) file_delete(f'flash:/{mod_patch_file}') file_delete(f'flash:/$_install_mod/{mod_patch_file}') raise def set_next_...
] reset: how connections should be reset when returned to the pool (False or None to rollback transcations started with begin(), the default value True always issues a rollback for safety's sake) failures: an optional exception class or a tuple of exception classes for which the connection...
print('Congratulations, you guessed it.') running=False# this causes the while loop to stop elifguess<number: print('No, it is a little higher than that') else: print('No, it is a little lower than that') else: print('The while loop is over.') # Do anything else you want to ...
The entire Python program exits when no alive non-daemon threads are left. python 对于 thread 的管理中有两个函数:join 和 setDaemon join:如在一个线程B中调用threadA.join(),则 threadA 结束后,线程B才会接着 threadA.join() 往后运行。 setDaemon:主线程A 启动了子线程B,调用B.setDaemaon(True),...
# We use the "class" statement to create a class class Human: # A class attribute. It is shared by all instances of this class # 类属性,可以直接通过Human.species调用,而不需要通过实例 species = "H. sapiens" # Basic initializer, this is called when this class is instantiated. ...
to automatically load version files including system software, patch files, configuration files when the device starts up, the devices to be configured must be new devices or have no configuration files. This is a sample of Zero Touch Provisioning user script. You can customize it to meet the ...
import *19def main():20win = GraphWin("My Circle", 100, 100)21c = Circle(Point(50,50), 10)22c.draw(win)23win.getMouse() # Pause to view result24win.close() # Close window when done25main()26---27GraphWin objects support coordinate transformation through the28setCoords method and po...
bisa Out[7]: True In [12]: c=[1,2,3] d=[1,2,3] print(c==d ) print(cisd) True False == 比较数值 is比较地址 In [14]: a=[1,2,3,4,5,6,7] a[2:5] Out[14]: [3, 4, 5] 2(startindex)包含,5(endindex)不包含 ...
109 """ 110 pass 111 112 def index(self, sub, start=None, end=None): 113 """ 子序列位置,如果没找到,报错 """ 114 S.index(sub [,start [,end]]) -> int 115 116 Like S.find() but raise ValueError when the substring is not found. 117 """ 118 return 0 119 120 def isalnum(...