python數(shù)值類(lèi)型

In programming, Data Types are an essential concept. Data of various types can be stored in variables as per the task we want the variables to perform.

在編程中，數(shù)據(jù)類(lèi)型是必不可少的概念。 根據(jù)我們希望變量執(zhí)行的任務(wù)，各種類(lèi)型的數(shù)據(jù)可以存儲(chǔ)在變量中。

The built-in data types in Python are

Python中的內(nèi)置數(shù)據(jù)類(lèi)型是

• Text Type

  文字類(lèi)型

• Numeric Type

  數(shù)值類(lèi)型

• Mapping Type

  映射類(lèi)型

• Sequence Type

  序列類(lèi)型

• Set Type

  設(shè)定類(lèi)型

• Boolean Type

  布爾型

• Binary Type

  二進(jìn)制類(lèi)型

In this tutorial, we are going to learn about the various numeric types in Python with examples.

在本教程中，我們將通過(guò)示例學(xué)習(xí)Python中的各種數(shù)字類(lèi)型 。

To store numeric values, we need specific numeric data types. Python has some of the data types to define numeric values – these numeric data types can be used to store various numeric values.

要存儲(chǔ)數(shù)值，我們需要特定的數(shù)值數(shù)據(jù)類(lèi)型。 Python具有一些用于定義數(shù)值的數(shù)據(jù)類(lèi)型-這些數(shù)值數(shù)據(jù)類(lèi)型可用于存儲(chǔ)各種數(shù)值。

There are 3 numeric data types in Python:

Python中有3種數(shù)字?jǐn)?shù)據(jù)類(lèi)型：

int

整型

float

浮動(dòng)

complex

復(fù)雜

1)int (1) int)

Integer numeric type is used to store signed integers with no decimal points, like -5, 2, 78, etc.

整數(shù)數(shù)字類(lèi)型用于存儲(chǔ)無(wú)小數(shù)點(diǎn)的帶符號(hào)整數(shù)，例如--5、2、78等。

Example:

例：

# Assigning integer values to Variables x = 8 y = -9# Manipulating the value of x x = x + y# Prints the updated value of x print("x= ", x)# Prints the Data Type of x print("Data type of x: ", type(x))

Output

輸出量

x= -1 Data type of x: <class 'int'>

2)浮動(dòng) (2) float)

Float numeric type is used to store floating-point values like 6.66, 58.9, 3.14, etc. Floats can also be in scientific notation, with E or e indicating the power of 10 (3.6e3 = 3.6x 10^3?= 3600).

浮點(diǎn)數(shù)字類(lèi)型用于存儲(chǔ)浮點(diǎn)值，例如6.66、58.9、3.14等。浮點(diǎn)數(shù)也可以用科學(xué)計(jì)數(shù)法表示，E或e表示10的冪(3.6e3 = 3.6x 10 ³ = 3600)。

Example:

例：

# Assigning float values to Variables x = 8.9 y = -9.1# Manipulating the value of x x = x - y# Prints the updated value of x print("x= ", x)# Prints the Data Type of x print("Data type of x: ", type(x))

Output

輸出量

x= 18.0 Data type of x: <class 'float'>

3)復(fù)雜 (3) complex)

Complex numeric type is used to store complex numbers like 3.14j, 8.0 + 5.3j, 2+6j etc.

復(fù)數(shù)類(lèi)型用于存儲(chǔ)復(fù)數(shù)，例如3.14j，8.0 + 5.3j，2 + 6j等。

Format: Real + Imaginary component j

格式：實(shí)數(shù)+虛數(shù)j

Note: The imaginary component of a complex number must be denoted by j. If we denote it using i it is considered as invalid syntax in Python.

注意：復(fù)數(shù)的虛部必須由j表示。 如果使用i表示它，則在Python中被視為無(wú)效語(yǔ)法。

Example:

例：

# Assigning complex values to Variables x = 1+8.5j y = 4+9j# Manipulating the value of x x = x + y# Prints the updated value of x print("x= ", x)# Prints the Data Type of x print("Data type of x: ", type(x))

Output

輸出量

x= (5+17.5j) Data type of x: <class 'complex'>

演示所有數(shù)值數(shù)據(jù)類(lèi)型的示例 (Examples demonstrating all numeric data types)

Let's look at some simple Python programs to demonstrate the numeric data types:

讓我們看一些簡(jiǎn)單的Python程序來(lái)演示數(shù)字?jǐn)?shù)據(jù)類(lèi)型：

Note: type() is a function used to determine the type of a variable

注意： type()是用于確定變量類(lèi)型的函數(shù)

Example 1: Program to print the data types of variables

示例1：打印變量數(shù)據(jù)類(lèi)型的程序

# Assigning Values to Variables a = 10 b = -1 c = 15.9 d = 6 + 8j# Printing data type of the Variables print("Data Type of a: ", type(a)) print("Data Type of b: ", type(b)) print("Data Type of c: ", type(c)) print("Data Type of d: ", type(d))

Output

輸出量

Data Type of a: <class 'int'> Data Type of b: <class 'int'> Data Type of c: <class 'float'> Data Type of d: <class 'complex'>

Example 2: Program to add complex numbers to integer and float type numbers

示例2：將復(fù)數(shù)添加到整數(shù)和浮點(diǎn)型數(shù)字的程序

a = 2 + 9j # complex number b = 2.8 # floating point number c = 9 # integer# addition of complex and integer comp_plus_int = a + c # addition of complex and float comp_plus_float = a + b# Printing result of addition and # datatype of the result print("Sum of complex and integer values= ",comp_plus_int) print("Data Type After addition: ", type(comp_plus_int)) print()print("Sum of complex and float values= ", comp_plus_float) print("Data Type After addition: ", type(comp_plus_float))

Output

輸出量

Sum of complex and integer values= (11+9j) Data Type After addition: <class 'complex'>Sum of complex and float values= (4.8+9j) Data Type After addition: <class 'complex'>

翻譯自: https://www.includehelp.com/python/numeric-types.aspx

python數(shù)值類(lèi)型

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