python float轉int
int(x [,base ]) 将x转换为一个整数long(x [,base ]) 将x转换为一个长整数float(x ) 将x转换到一个浮点数complex(real [,imag ]) 创建一个复数str(x ) 将对象x 转换为字符串repr(x ) 将对象x 转换为表达式字符串eval(str ) 用来计算在字符串中的有效Python表达式,并返回一个对象tuple(s ) 将序列s 转换为一个元组list(s ) 将 ..., 01-2 Python內建型態轉換(int, float, str). 內建型態int, float及str之間可以使用內建函式(Built-in Functions)相互轉換. 1. 數字間轉換. 程式範例. # 宣告一個整數 a=100 print(a) print(type(a)) print('-'*30) # 將整數轉為浮點數 # float()是內建函式 b=float(a) print(b) print(type(b)) print('-'*30) # 宣告, Python学习笔记一:数据类型转换. 一、int函数能够 （1）把符合数学格式的数字型字符串转换成整数 （2）把浮点数转换成整数，但是只是简单的取整，而非四舍五入。 举例：. 复制代码 ... 5 cc = int("-123.45") #Error,Can't Convert to int 6 print "cc = ",cc ... 二、float函数将整数和字符串转换成浮点数。 举例：. 复制代码., 2.51 * 100 = 250.999999999997. The int() function simply truncates the number at the decimal point, giving 250. Use int(round(2.51*100)). to get 251 as an integer. In general, floating point numbers cannot be represented exactly. One should therefore be ,All integers that can be represented by floating point numbers have an exact representation. So you can safely use int on the result. Inexact representations occur only if you are trying to represent a rational number with a denominator that is not a powe,'20.0' is a string, not a float ; you can tell by the single-quotes in the error message. You can get an int out of it by first parsing it with float , then truncating it with int : >>> int(float('20.0')) 20. (Though maybe you', Python int objects have infinite precision (bounded only by memory). float objects do not have infinite precision; numbers are represented as an exponent and a significant, with the latter building up a number from 53 binary fractions. Binary fractions c, python内提供了几种称为强制类型转换的函数，可以将一个变量的类型强制转换为另一种类型。比如，整型->浮点型，列表->元组。 我们在之前已经学习了很多种数据类型· 整型int· 浮点型float· 字符串型str· 列表list· 元组tuple· 字典dict· 集合set 在一定条件下，其中的几种类型是可以相互转换的，是有一定规律的。比如整 ...,23. float()則可以幫助整數變成浮點，加上.0. 例. >>>float(23). 23.0. input()則是可以讓使用者鍵入任何東西，出來的東西直接是string. 例. >>>spam=input(). 23.332. >>>spam. '23.332'. 但是這邊很有趣，如果想要把input出來的str轉成可加減的數字int 或float，是不可以兩種直接互轉的，你必須先猜出使用者鍵入的int 或float 才可以轉換
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 python float轉int 相關參考資料
python各种类型转换-int,str,char,float,ord,hex,oct等- CSDN博客
int(x [,base ]) 将x转换为一个整数long(x [,base ]) 将x转换为一个长整数float(x ) 将x转换到一个浮点数complex(real [,imag ]) 创建一个复数str(x ) 将对象x 转换为字符串repr(x ) 将对象x 转换为表达式字符串eval(str ) 用来计算在字符串中的有效Python表达式,并返回一个对象tuple(s ) 将序列s 转... http://blog.csdn.net Python01-2 內建型態轉換(int, float, str).md at master · tomlinNTUB ...
01-2 Python內建型態轉換(int, float, str). 內建型態int, float及str之間可以使用內建函式(Built-in Functions)相互轉換. 1. 數字間轉換. 程式範例. # 宣告一個整數 a=100 print(a) print(type(a)) print('-'*30) # 將整數轉為浮點數 # float()是內建函式 b=floa... https://github.com Python学习笔记一:数据类型转换- Delcpp - 博客园
Python学习笔记一:数据类型转换. 一、int函数能够 （1）把符合数学格式的数字型字符串转换成整数 （2）把浮点数转换成整数，但是只是简单的取整，而非四舍五入。 举例：. 复制代码 ... 5 cc = int("-123.45") #Error,Can't Convert to int 6 print "cc = ",cc ... 二、fl... https://www.cnblogs.com floating point - Python float to int conversion - Stack Overflow
2.51 * 100 = 250.999999999997. The int() function simply truncates the number at the decimal point, giving 250. Use int(round(2.51*100)). to get 251 as an integer. In general, floating point numbers ... https://stackoverflow.com math - Safest way to convert float to integer in python? - Stack ...
All integers that can be represented by floating point numbers have an exact representation. So you can safely use int on the result. Inexact representations occur only if you are trying to represent ... https://stackoverflow.com floating point - python float to in int conversion - Stack Overflow
'20.0' is a string, not a float ; you can tell by the single-quotes in the error message. You can get an int out of it by first parsing it with float , then truncating it with int : >>&g... https://stackoverflow.com floating point - Python float to integer error - Stack Overflow
Python int objects have infinite precision (bounded only by memory). float objects do not have infinite precision; numbers are represented as an exponent and a significant, with the latter building u... https://stackoverflow.com 九、 python中的强制类型转换- 简书
python内提供了几种称为强制类型转换的函数，可以将一个变量的类型强制转换为另一种类型。比如，整型->浮点型，列表->元组。 我们在之前已经学习了很多种数据类型· 整型int· 浮点型float· 字符串型str· 列表list· 元组tuple· 字典dict· 集合set 在一定条件下，其中的几种类型是可以相互转换的，是有一定规律的。比如整 ... https://www.jianshu.com Python 新手日記int() float() input() @ Those words in my head. :: 痞客邦::
23. float()則可以幫助整數變成浮點，加上.0. 例. >>>float(23). 23.0. input()則是可以讓使用者鍵入任何東西，出來的東西直接是string. 例. >>>spam=input(). 23.332. >>>spam. '23.332'. 但是這邊很有趣，如果想要把input出來的str轉成可加... http://words1nmyhead.pixnet.ne |