以下是一个示例: # 初始化一个空列表my_list=[]# 定义几个字符串strings_to_add=["Python","Java","C++","JavaScript"]# 将字符串逐个添加到列表forstringinstrings_to_add:my_list.append(string)# 打印结果print(my_list) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 输出结果 ['Python'...
List string items } LIST ||--o{ STRING : contains 序列图 接下来,我们用序列图来展示使用append()方法向列表添加字符串的过程: AppendMethodListUserAppendMethodListUserCreate a new listCall append("Hello")Add "Hello" to the listCall append("World")Add "World" to the listDisplay list 结论 在...
Try this: import aststring = "['a', 'b', 'a e']['de']['a']['a']"string = string.replace("]", "],")list_ = list(ast.literal_eval(string))print(list_) output: [['a', 'b', 'a e'], ['de'], ['a'], ['a']] 请记住,如果列表中的某个项是]字符,则此操作将失败...
Python Convert String to List Let’s look at a simple example where we want to convert a string to list of words i.e. split it with the separator as white spaces. s = 'Welcome To JournalDev' print(f'List of Words ={s.split()}') Copy Output: List of Words =['Welcome', 'To...
Python列表到字符串的转换 (Python List to String Conversion) If the list contains a string, int, floats then its...如果列表包含字符串int浮点数,则在我们打印列表时将打印其元素值。...在这种情况下,我们可以通过在其元素上调用str()函数将列表转换为字符串。...翻译自: https://www.journaldev.com/...
这样就实现了将邮件发给多个人,这多个收件人,都在收件人列表中smtp.sendmail('from@qq.com',['to1@qq.com','to2@qq.com'],msg.as_string())smtp.quit() 3、抄送邮件 用msg['Cc']来装抄送列表。注意sendmail的第2个参数,这个参数是一个所有收件人的 list(列表),收件人和抄送人都在一个list里面。如果...
words= shlex.split(line) #2. join string list with delimitor#e.g. li = ['a', 'b','c'] join to A_B_C.'_'.join( [ x.upper()forxinli ] ) #3. list的长度..len(xxlist)
前面讲到了,我们可以使用变量来指定不同的数据类型,对网工来说,常用的数据类型的有字符串(String), 整数(Integer), 列表(List), 字典(Dictionary),浮点数(Float),布尔(Boolean)。另外不是很常用的但需要了解的数据类型还包括集合(set), 元组(tuple)以及空值(None),下面一一举例讲解。
coustom_choice= input('你输入编号有误,请重新输入')print('谢谢惠顾,你已经购买了%s,你的账户还剩%s元'% (shopping_list, salary)) 字符串操作: name.capitalize() 首字母大写 name.casefold() 大写全部变小写 name.center(50,"-") 输出'---Alex Li---'name.count('lex') 统计 lex出现次数 name.enc...
If you add new items to a list, the new items will be placed at the end of the list. Note:There are somelist methodsthat will change the order, but in general: the order of the items will not change. Changeable The list is changeable, meaning that we can change, add, and remove ...