1、使用for循环 代码语言:javascript 代码运行次数:0 运行 testlist=['h','e','l','l','o']teststr=''foriintestlist:teststr+=iprint(teststr) 2、join方法: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 testlist=['h','e','l','l','o']teststr="".join(testlist)print(teststr)...
接下来,我们创建一个学生对象列表,并将每个学生的成绩从整数转换为字符串,如下所示: # 定义学生对象列表students=[Student("Alice",90),Student("Bob",80),Student("Charlie",70)]# 将学生的成绩从整数转换为字符串string_grades=list(map(lambdastudent:str(student.grade),students))print(string_grades) 1....
Strings can beconcatenatedto build longer strings using the plus sign and also they can bemultipliedby a number, which results in the continuous repetition of the string as many times as the number indicates. Also, if we want to find out thelengthof the string, we simply have to use thelen...
importstring#不加"+""-"纯数字,用填充物"0"将字符串前填充满print("12345".zfill(10))#加"-"纯数字,越过"-"用填充物"0"将字符串前填充满print("-125".zfill(10))#加"+"数字字母组合,越过"+"用填充物"0"将字符串前填充满print("+qwe125".zfill(10))#加其他符号,用填充物"0"将字符串前填充...
python将dataframe转换为list dataframe转换成string,转换为字符串类型tips['sex_str']=tips['sex'].astype(str)转换为数值类型转为数值类型还可以使用to_numeric()函数DataFrame每一列的数据类型必须相同,当有些数据中有缺失,但不是NaN时(如missing,null等),会使整列
(2) string 字符串, 可以用单引号, 双引号, 三引号 print('\'nihao\'')#'nihao'print('\"nihao\"')#"nihao" \转义符, 其他也可以用转义字符表示 a='\101\t\x41\n'b='\141\t\x61\n'print(a,b)#A A#a a 字符串的索引:从0 开始计数 ...
string = "apple,orange,pear" print(string.split(",")) # ["apple", "orange", "pear"] 7. 使用特定字符拼接字符串 函数join主要用于传入字符串列表,并对字符串列表中所有的字符串通过分隔符进行拼接,举例如下: list1 = ["apple", "orange", "pear"] string1 = " ".join(list1) # "apple or...
join(str_list) print(join_str) # Output: "Python is fun" # For a list of numbers, convert each element to a string first num_list = [1, 2, 3] delimiter = " " # Define a delimiter num_list_string = map(str, num_list) # Convert each element into a string first join_num_...
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', 'JournalDev'] If you are...
string = "Hello World" new_string = string.replace('World', 'Python') print(new_string) # 输出'Hello Python' 8.字符串的分割: 使用split()方法可以根据指定的分隔符将字符串拆分成子串,并返回一个列表。 string = "Hello World" split_string = string.split(' ') print(split_string) # 输出[...