Python Number (number) Ⅰ

Python  Number The (digital)

Python Number http://www.xuanhe.net/ for storing data type values.

It is not allowed to change the data type, which means that if you change the value of the Number data type, will be re-allocated memory space.

The following examples Number object will be created when the variable assignment:

 

 

You can also use the del statement to remove some of the Number object reference.

del statement syntax is:

 

 You can delete individual or multiple objects by using the del statement, for example:

 

Python supports four different types of values:

  • Integer (Int)  - often referred to is an integer or an integer, is positive or negative integer, with no decimal.
  • Long integer (Long integers)  - unlimited integer size of the integer last is an uppercase or lowercase L.
  • Float (Floating Point Real values)  - float consists of an integer portion and a decimal part, may also be represented float (2.5e2 = 2.5 x 10 using scientific notation 2  = 250)
  • Complex (Complex Numbers)  - complex composed of a real part and an imaginary part, may be used a + bj, or Complex (a, b) indicates, the real part and the imaginary part b is a float.

 

 

 

Long integer can also use lowercase "L", but it is recommended that you use a capital "L", to avoid confusion with the numbers "1." Python "L" be displayed long integer.

Python also supports complex, the complex composed of a real part and an imaginary number part, may be used a + bj, or Complex (a, b) indicates, the real part and the imaginary part b is a floating-point

Python Number Type Conversion

 

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Origin www.cnblogs.com/danjiu/p/11459153.html