name属性作为参数时，Python 会自动调用此方法del：>>> from person import Person>>> jane = Person("Jane")>>> jane.name'JANE'>>> jane.name = "Jane Doe">>> jane.name'JANE DOE'>>> del jane.nameTraceback (most recent call last): ...AttributeError: can't delete attribute 'name'您...
# 查看行高sht_3.range('A1').row_height 13.8 A1单元格高改为15.6，宽改为2.2 ...
*Numbers(数字)*String(字符串)*List(列表)*Tuple(元组)*Dictionary(字典) 三、 Python数字(Number) Python数字类型用于存储数值数值类型是不允许改变的,这就意味着如果改变数字类型的值,将重新分配内存空间 代码语言:javascript 代码运行次数:0 运行 AI代码解释 var1=10var2=20 也可以使用del语句删除一些数字对象...
key, /) | Delete self[key]. | | __eq__(self, value, /) | Return self...
Python program to delete all rows in a dataframe # Importing pandas packageimportpandasaspd# Importing calendarimportcalendar# Creating a Dictionaryd={'Name':['Ram','Shyam','Seeta','Geeta'],'Age':[20,21,23,20],'Salary':[20000,23000,19000,40000],'Department':['IT','Sales','Production'...
The enumerate(some_string) function yields a new value i (a counter going up) and a character from the some_string in each iteration. It then sets the (just assigned) i key of the dictionary some_dict to that character. The unrolling of the loop can be simplified as: >>> i, some_...
四.数据类型 Python3 中有六个标准的数据类型: Number(数字) String(字符串) List(列表) Tuple(元组) Set(集合) Dictionary(字典) Python3 的六个标准数据类型中: 不可变数据(3 个):Number(数字)、String(字符串)、Tuple(元组); 可变数据(3 个):List(列表)、Dictionary(字典)、Set(集合)。1...
get_pressed方法调用返回一个键常量的字典,字典的键是键盘的键常量,字典的值是布尔值,dictionary_name[K_a] = True。假设你正在制作一个程序,它将使用up作为跳跃按钮。你需要编写以下代码: import pygame as p any_key_pressed = p.key.get_pressed() if any_key_pressed[K_UP]: #UP key has been ...
("delete : Delete a person's information from ID number")print('quit : Save changes and exit')print('? : Print this message')defstore_people(db):pid=input('Please enter a unique ID number: ')person={}person['name']=input('Please enter the name: ')person['age']=input('Please ...
if eng in dictionary.keys(): print(eng + ":\t" + dictionary[eng]) else: print("您查询的词尚未收录,敬请期待") ## 16.02Python语言基础(tkinter概述)(熟练) ### 1.1 tkinter的概述 * tkinter是python的一个标准GUI(图形化界面) * 扩展: ...