Question

我在pycharm上创建了一个程序，允许用户输入一个数字，这样就可以创建一个项目列表。该计划如下：

item = int(input("How many items do you want in your list? "))
stringList = []
for i in range(1, item +1):
    stringList.append(input("Enter String {0}: ".format(i)))
print(stringList)

可以输出的示例显示如下：

How many items do you want in your list? 3
Enter String 1: apple
Enter String 2: banana
Enter String 3: grape
['apple', 'banana', 'grape']

我现在要做的是添加用户输入的每个字符串的长度。我是python的新手，想知道如何添加长度，所以输出将是这样的：

Enter String 1: apple
Enter String 2: banana
Enter String 3: grape
['apple', 'banana', 'grape']
The length of the string 'apple' is 5
The length of the string 'banana' is 6
The length of the string 'grape' is 5
The total length of all strings is 21

Answer 1

使用len(string_var)

这将返回字符串string_var

的长度

您可以添加以下代码：

for i in range(1, item +1):
    stringList.append(input("Enter String {0}: ".format(i)))
print(stringList)

total_str_length = 0

for each_string in stringList:
     print("The length of the string '%s' is %s") %(each_string, len(each_string))
     total_str_length += len(each_string)

print("The total length of all strings is %s") % total_str_length

这将打印stringList格式化为预期输出的每个字符串。

Answer 2

这是我在调整给出的反馈后得出的答案：

item = int(input("How many items do you want in your list? "))
itemnum = []
for i in range(1, item +1):
    itemnum.append(input("Enter String {0}: ".format(i)))
print(itemnum)

totalLength = 0

for eachString in itemnum:
    print("The length of the string",(eachString), "is :", len(eachString))
    totalLength += len(eachString)
print("The total length of all strings is:", totalLength)

输出结果是：

How many items do you want in your list? 4
Enter String 1: red
Enter String 2: blue
Enter String 3: green
Enter String 4: yellow
['red', 'blue', 'green', 'yellow']
The length of the string red is : 3
The length of the string blue is : 4
The length of the string green is : 5
The length of the string yellow is : 6
The total length of all strings is: 18

Answer 3

Manish的答案最容易理解，但作为一个单行解决方案，您可以这样做，在您构建列表之后将所有内容添加到一起：

total_length = sum(len(word) for word in stringList)

为我的for循环程序添加长度

3 个答案: