Python中的int（）函数-yiteyi-C++库

Python int（）函数 返回给定对象中的整数或将给定基数中的数字转换为十进制。

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Python int（）语法：

int（字符串，基）

Python int（）参数：

字符串： 由1和0组成
基数： （整数值）数字的基数。

Python int（）返回：

返回一个整数值，它相当于给定基中的二进制字符串。

Python int（）异常和错误：

类型错误： 当字符串或整数以外的任何数据类型在其等效位置传递时，返回TypeError。

Python int（）方法示例

示例1：在Python中使用int（）函数

Python3

                         # Python3 program for implementation                       
                         # of int() function                       
                         num                                     =                                     13                       
           
                         String                                     =                                     '187'                       
           
                         # Stores the result value of                       
                         # binary "187" and num addition                       
                         result_1                                     =                                     int                                     (String)                                     +                                     num                       
                         print                                     (                                     "int('187') + 13 = "                                     , result_1,                                     ""                                     )                       
           
                         # Example_2                       
                         str                                     =                                     '100'                       
           
                         print                                     (                                     "int('100') with base 2 = "                                     ,                                     int                                     (                                     str                                     ,                                     2                                     ))                       
                         print                                     (                                     "int('100') with base 4 = "                                     ,                                     int                                     (                                     str                                     ,                                     4                                     ))                       
                         print                                     (                                     "int('100') with base 8 = "                                     ,                                     int                                     (                                     str                                     ,                                     8                                     ))                       
                         print                                     (                                     "int('100') with base 16 = "                                     ,                                     int                                     (                                     str                                     ,                                     16                                     ))                       

输出：

int('187') + 13 =  200 int('100') with base 2 =  4int('100') with base 4 =  16int('100') with base 8 =  64int('100') with base 16 =  256

示例2：将二进制字符串转换为Python int base

Python3

                         # Python3 program for implementation                       
                         # of int() function                       
           
                         # "111" taken as the binary string                       
                         binaryString                                     =                                     "111"                       
           
                         # Stores the equivalent decimal                       
                         # value of binary "111"                       
                         Decimal                                     =                                     int                                     (binaryString,                                     2                                     )                       
           
                         print                                     (                                     "Decimal equivalent of binary 111 is"                                     , Decimal)                       
           
                         # "101" taken as the octal string                       
                         octalString                                     =                                     "101"                       
           
                         # Stores the equivalent decimal                       
                         # value of binary "101"                       
                         Octal                                     =                                     int                                     (octalString,                                     8                                     )                       
           
                         print                                     (                                     "Decimal equivalent of octal 101 is"                                     , Octal)                       

输出：

Decimal equivalent of binary 111 is 7Decimal equivalent of octal 101 is 65

例3：程序来演示类型错误

Python3

                         # Python3 program to demonstrate                       
                         # error of int() function                       
           
           
                         # when the binary number is not                       
                         # stored in as string                       
                         binaryString                                     =                                     111                       
           
                         # it returns an error for passing an                       
                         # integer in place of string                       
                         decimal                                     =                                     int                                     (binaryString,                                     2                                     )                       
           
                         print                                     (decimal)                       

输出：

TypeError: int() can't convert non-string with explicit base

示例4:Python int（）异常

Python3

                         try                                     :                       
                                                 var                                     =                                     "Geeks"                       
                                                 print                                     (                                     int                                     (var))                       
                         except                                     ValueError as e:                       
                                                 print                                     (e)                       