>>> s = set([1, 1, 2, 2, 3, 3]) >>> s {1, 2, 3} 1. 2. 3. .add():向set中添加元素 .remove(key):在set中删除元素,类似erase() set的原理和dict一样,所以,同样不可以放入可变对象,因为无法判断两个可变对象是否相等,也就无法保证set内部“不会有重复元素” 与C不同:在python中set是无
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``` # Python script to schedule tasks using cron syntax from crontab import CronTab def schedule_task(command, schedule): cron = CronTab(user=True) job = cron.new(command=command) job.setall(schedule) cron.write() ``` 说明: 此Python 脚本利用 crontab 库来使用 cron 语法来安排任务。它使您...
3,4) book_obj.authors.remove(author_obj1,author_obj2) # 也可以填入对象 如果传入多个参数需要加()或[] book_obj.authors.clear() add()\remove() 多个位置参数(数字 对象) set() 可迭代对象
代码语言:javascript 代码运行次数:0 运行 AI代码解释 importtkinterimporttime defgettime():var.set(time.strftime("%H:%M:%S"))# 获取当前时间 root.after(1000,gettime)# 每隔1s调用函数 gettime 自身获取时间 root=tkinter.Tk()root.title('时钟')var=...
1.add(self, *args, **kwargs) (只能更新一个值) Add an element to a set. element [ˈelɪmənt] 元素 This has no effect if the element is already present. effect [ɪˈfekt] 影响 添加一个元素到集合里面,如果这个元素已经有了,不影响 ...
mammoth with open("document.docx", "rb") as docx_file: result = mammoth.convert_to_html...
( Liquid() .add("lq", [0.67, 0.30, 0.15]) .set_global_opts(title_opts=...
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At the same time, Python has an active community that contributes an even more extensive set of packages that can help you with your development needs. These packages are published to the Python Package Index, also known as PyPI (pronounced Pie Pea Eye). Note: When you’re installing third...