写着玩儿的（

Author: MCTF-Alpha-27

type.py

@@ -0,0 +1,98 @@
+__author__ = "Jerry"
+__version__ = "1.2.0"
+
+class NotComposedOfNumbersError(Exception):
+    "不是由数字组成的字符串使用String对象的toInt()函数或toInteger()函数时抛出"
+    pass
+
+class String:
+    "字符串类，是对Python原版字符串的加强"
+    def __init__(self, str_) -> None:
+        if type(str_) is not str:
+            raise TypeError(
+                "请使用字符串类型来创建String对象"
+            )
+        self.__str = str_
+        self.length = len(str_) # 字符串大小
+
+    def __repr__(self) -> str:
+        return self.__str
+
+    __str__ = __repr__
+
+    def __add__(self, other):
+        "当与一个字符串或另一个String对象进行加操作时调用"
+        if type(other) is String:
+            return self.__str + other.__str
+        else:
+            return self.__str + other
+
+    def __sub__(self, other):
+        "当与一个字符串或另一个String对象进行减操作时调用"
+        if type(other) is String:
+            return self.__str - other.__str
+        else:
+            return self.__str - other
+
+    def isNumber(self):
+        "判断字符串是否由数字组成，返回布尔值"
+        try:
+            int(self.__str)
+        except ValueError:
+            return False
+        else:
+            return True
+
+    def toInt(self):
+        "如果能，将字符串转成整数，否则抛出NotComposedOfNumbersError异常"
+        try:
+            return int(self.__str)
+        except ValueError as e:
+            raise NotComposedOfNumbersError(
+                "字符串不是由数字组成的"
+            ) from e
+
+    def toInteger(self):
+        "如果能，将字符串转成Integer对象，否则抛出NotComposedOfNumbersError异常"
+        try:
+            return Integer(int(self.__str))
+        except ValueError as e:
+            raise NotComposedOfNumbersError(
+                "字符串不是由数字组成的"
+            ) from e
+
+class Integer:
+    "整数类型，是对Python原版整数的加强"
+    def __init__(self, int_) -> None:
+        if type(int_) is not int:
+            raise TypeError(
+                "请使用整数类型创建Integer对象"
+            )
+        self.__int = int_
+
+    def __repr__(self) -> str:
+        return str(self.__int)
+
+    __str__ = __repr__
+
+    def __add__(self, other):
+        "当与一个整数或另一个Integer对象进行加操作时调用"
+        if type(other) is Integer:
+            return self.__int + other.__int
+        else:
+            return self.__int + other
+
+    def __sub__(self, other):
+        "当与一个整数或另一个Integer对象进行减操作时调用"
+        if type(other) is Integer:
+            return self.__int - other.__int
+        else:
+            return self.__int - other
+
+    def toStr(self):
+        "将整数转成字符串"
+        return str(self.__int)
+
+    def toString(self):
+        "将整数转成String对象"
+        return String(str(self.__int))