Python 中的collections.UserString

字元串是表示 Unicode 字元的位元組。字元是長度為 1 的字元串。問題是 Python 不支持這種數據類型字元。

示例:

# First, we will create a String with a single Quotes
String_1 = 'JavaTpoint is the best platform to learn Python'
print("String with the use of Single Quotes: ")
print(String_1)

# Now, we will create a String with double Quotes
String_2 = "JavaTpoint is the best platform to learn Python"
print("\n String with the use of Double Quotes: ")
print(String_2)

輸出

String with the use of Single Quotes: 
JavaTpoint is the best platform to learn Python

 String with the use of Double Quotes: 
JavaTpoint is the best platform to learn Python

Python 提供了一個字元串作為容器，稱為 UserString ，包含在collections模塊中。這個類作為一個附加類來包裝字元串對象。這個類在創建自己的字元串的情況下是有幫助的，這些字元串已經被修改，甚至有了新的特性。這是一個為字元串創建新功能的選項。此類可用於接受任何可轉換為字元串的參數，並創建非結構化字元串的模擬，其內容存儲在常規字元串中。該字元串可以通過其數據屬性來訪問。

語法:

UserString的語法是:

collections.UserString(seq)

例 1:(帶值且為空的用戶字典)

from collections import UserString as US
P = 123546

# Here, we will create an UserDict
user_string = US(P)
print("UserString 1: ", user_string.data)
# Now, we will create an empty UserDict
user_string = US("")
print("UserString : ", user_string.data)

輸出

UserString 1:  123546
UserString :  

例 2:可變字元串(追加函數和移除函數)

from collections import UserString as US
# Here, we will create a Mutable String
class User_string(US):

    # Function to append to string
    def append(self, s):
        self.data += s

    # Function to remove from string
    def remove(self, s):
        self.data = self.data.replace(s, "")

# Driver's code
s_1 = User_string("JavaTpoint")
print("The Original String: ", s_1.data)

# Here, we will Append to string
s_1.append("ing")
print("String After Appending: ", s_1.data)

# Here, we will Remove from string
s_1.remove("a")
print("String after Removing: ", s_1.data)

輸出

The Original String:  JavaTpoint
String After Appending:  JavaTpointing
String after Removing:  JvTpointing

在本教程中，我們已經討論了如何在 Python 中使用「集合」模塊的 UserString 函數。