if filetype in fileName: image = urllib.URLopener() linkGet = http://www.irrelevantcheetah.com + fileName filesave = string.lstrip(fileName, '/') image.retrieve(linkGet, filesave) elif "htm" in fileName: # This covers both ".htm" and ".html" filenames linkList.append(link) 就这...
) print() action = input("> ").strip().upper() if action == "A": return "ADD" elif action == "R": return "REMOVE" elif action == "C": return "INVENTORY_REPORT" elif action == "O": return "REORDER_REPORT" elif action == "Q": return "QUIT" else: print("Unknown action!
system() print(f"{system} detected") if system == "Linux": return Bash_shell() elif system == "Windows": return Pwsh_shell() elif system == "Darwin": raise NotImplementedError class Pwsh_shell(): def __init__(self) -> None: try: run(["pwsh", "-V"], stdout=DEVNULL, stderr...
fromtkinterimport*root=Tk()root.wm_title('hello,python')root.geometry('300x200')#在窗体root上添加label标签label=Label(root)#调用Label绘制函数,root参数为根窗体对象,即在root窗体上绘制label控件label['text']='welcome to the first GUI program using python!'#设置text属性,即显示内容label['font']=...
在Python中,条件语句又叫做判断语句,判断语句由if, elif以及else三种语句组成,其中if为强制语句,可以独立使用,elif和else为可选语句且不能独立使用。判断语句通过判断一条或多条语句的条件是否成立(True或者False),从而决定下一步的动作,如果判断条件成立(True),则执行if或elif语句下面的代码,如果判断条件不成立(Fals...
create_task(__tts()) elif str(msg.text) == "结束": #监听到结束, 停止监听 observe.stop() #结束event_loop asyncio.get_running_loop().run_in_executor(None, asyncio.get_running_loop().stop) observe.set_handler(handler) #启动 observe.start() await asyncio.sleep(0) if __name__ == ...
from tkinter import * root=Tk() root.wm_title('hello,python') root.geometry('300x200') #在窗体root上添加label标签 label=Label(root) #调用Label绘制函数,root参数为根窗体对象,即在root窗体上绘制label控件 label['text']='welcome to the first GUI program using python!' #设置text属性,即显示内容...
defdequeue(self):if(self.head==-1):print("The circular queue is empty\n")elif(self.head==self.tail):temp=self.queue[self.head]self.head=-1self.tail=-1returntempelse:temp=self.queue[self.head]self.head=(self.head+1)%self.kreturntemp ...
t1.start()#启动线程 t2.start()#启动另一个线程print(t1.getName())#获取线程名print(t2.getName())run("t1")run("t2")#继承式调用classMyThread(threading.Thread):def__init__(self,num,sleep_time):super(MyThread,self).__init__()self.num=num ...
elif i==0: print("The sum did not change: %i" % sum) # 最后的else分支(可选)。 else: handle_error() # 死循环 while True: print("I got stuck forever!") 属于同一个块的所有内容都必须缩进相同的距离。括号和花括号等元素的优先级高于缩进。以下代码段即使是以不良的编程风格编写的,但却是完...