In this tutorial, we will look at different ways to select a random item from a list. Let's assume you have a list with multiple Twitter user names and you are trying to select a random Twitter user. Below is a
import secrets names = ["John", "Juan", "Jane", "Jack", "Jill", "Jean"] def selectRandom(names): return secrets.choice(names) print("The name selected is: ", selectRandom(names)) Use Module NumPy to Select a Random Item From a List in Python The NumPy module also has utility ...
假设我们要查询的表名为users,并且我们想要获取所有用户的姓名和年龄。 cursor=conn.cursor()query="SELECT name, age FROM users"cursor.execute(query) 1. 2. 3. 步骤4:获取查询结果 执行查询后,我们需要获取结果。fetchall()方法会返回一个包含所有查询结果的元组列表。 results=cursor.fetchall() 1. 步骤5...
, 'Python','Go', 'JavaScript', 'PHP', 'Swift']var = tk.StringVar()var.set(langs)listbox = tk.Listbox( root, listvariable=var, height=6, width=20, selectmode=tk.EXTENDED)listbox.pack(pady=60)button=tk.Button(root, text='获取选定内容', command=get_item)button.pack...
['apple','banana','cherry','date']foriteminmy_list:c.execute('INSERT INTO my_list (item) VALUES (?)',(item,))conn.commit()# 从数据库读取列表c.execute('SELECT item FROM my_list')loaded_list=[row[0]forrowinc.fetchall()]conn.close()print(loaded_list)# 输出: ['apple', 'banana...
在创建了列表选项框后,使用listvariable对列表内容赋值,并可设置选择模式selectmode,单选为browse或single,多选为multiple。选择到某一项后,还需要添加事件响应,因此对整个列表选项框使用bind方法,绑定事件类型ListboxSelect及对应的响应。如下代码实践: from tkinter import * ...
(page) submit.click() wait.until( EC.text_to_be_present_in_element((By.CSS_SELECTOR, '#mainsrp-pager li.item.active > span'), str(page))) wait.until(EC.presence_of_element_located((By.CSS_SELECTOR, '.m-itemlist .items .item'))) get_products() except TimeoutException: index_...
(e(document.getElementsByTagName("head").item(0)),void 0):(b=document.createElement("iframe"),b.style.height=0,b.style.width=0,b.style.margin=0,b.style.padding=0,b.style.border="0 none",b.name="zhipinFrame",b.src="about:blank",b.attachEvent?b.attachEvent("onload",function(){...
items(): if isinstance(value, list): images = [] for item in value: images.append(pygame.image.load(item)) game_images[key] = images else: game_images[key] = pygame.image.load(value) game_sounds = {} for key, value in cfg.AUDIO_PATHS.items(): if key == 'bgm': continue game...
sql='select item_id,item_title,item_image,item_price,num from tb_cart;'# 执行sql语句 cursor.execute(sql) # 获取所有游标 data1=cursor.fetchall() # 因为data1为元组,到传到前端只能读取到一条信息,所以要转成列表 data=list(data1) # 给前端返回数据标名数据类型,前端好区分需求数据 ...