字典(dict)字典属于一个新的数据结构,称之为映射,字典的作用和列表的差不多,都是用来储存对象的容器。字典中每一个元素(value)都有一个对应的名字(key)通过这唯一的名字可以快速找到对应的元素。 key(字典键)和value(字典值)是一一对应的 语法:{key:value,key:value,key:value} 字典键(key):可以是任意不可...
defcreate_template(ip,port,**kwargs):# kwargs 作为可选参数,用来配置settings和其他项 header={"X-ApiKeys":"accessKey={accesskey};secretKey={secretkey}".format(accesskey=accesskey,secretkey=secretkey),"Content-Type":"application/json","Accept":"text/plain"}policys={}# 这里 grouppolicy_set ...
self.cache[key] = func(*args, **kwargs) return self.cache[key] return wrapper @CustomCache() def expensive_function(x): print("Calculating...") return x ** 2 print(expensive_function(5)) # 计算并缓存 print(expensive_function(5)) # 从缓存中返回结果 自定义缓存类提供了灵活性,可根据具...
Delete the file successfully.") return OK def file_delete_on_MPUs(file_path='', slave=0): if file_path: file_name = os.path.basename(file_path) home_path_master, home_path_slave, _= get_home_path() ret = file_delete(file_path=os.path.join(home_path_master, file_name)) if ...
E501 'type_check_examples/function.py:19: error: Missing positional argument "x" in call to "__call__" of "FunctionPipeline"', # noqa: E501 'type_check_examples/function.py:22: error: Argument "x" to "__call__" of "FunctionPipeline" has incompatible type "str"; expected "int"'...
def submit(self, fn, *args, **kwargs): with self._shutdown_lock: if self._broken: raise BrokenProcessPool('A child process terminated ' 'abruptly, the process pool is not usable anymore') if self._shutdown_thread: raise RuntimeError('cannot schedule new futures after shutdown') f =...
For some reason, the Python 3.8's "Walrus" operator (:=) has become quite popular. Let's check it out,1.# Python version 3.8+ >>> a = "wtf_walrus" >>> a 'wtf_walrus' >>> a := "wtf_walrus" File "<stdin>", line 1 a := "wtf_walrus" ^ SyntaxError: invalid syntax >>>...
if my_dict.has_key('k1'): my_dict['k1'].append(value) else: my_dict['k1'] = [value] else: if my_dict.has_key('k2'): my_dict['k2'].append(value) else: my_dict['k2'] = [value] from collections import defaultdict
checkbok的事件 执行先后 实例;表单验证 3、前端组件 实际就是别人写好了模板,样式,做个了结,在后面的项目部分,或使用这些个前端组件,进行快速的前端开发 几个比较出名的组件 easyui jqueryui bootstrap 组件的补充内容 3.1、响应式 @media 根据web界面的长框等因素使用不同的样式。即自适应 ...
简介:Python 初探tkinter下拉和弹出Menu以及选项OptionMenu 效果图: 源代码: import tkinter as tkimport numpy as npdef drawCoord():global canvascanvas = tk.Canvas(win, width = 400, height = 400, bg = 'white')canvas.place(x = 100, y = 60)coords = (20,200,380,200), (200,20,200,380...