Four numeric types (int, long, float, complex) and pythoncomplex
Python supports four different numeric types, including int (integer) long (long integer) float (floating point actual value) complex (plural ), this article introduces four numeric types of python to coders. For more information, see.
The numeric data type stores the numeric value. They are unchangeable data types, which means changing the numeric data type results in a new assigned object value.
Number object is created when you assign a value to them. For example:
var1 = 1var2 = 10
You can also delete the numeric object reference by using the del statement.
The syntax of the del statement is:
del var1[,var2[,var3[....,varN]]]]
You can use the del statement to delete a single object or multiple objects.
For example:
del vardel var_a, var_b
Python supports four different numeric types:
• Int (symbol integer ):It is usually called an integer or integer, and there is no positive or negative integer of the decimal point.
• Long (long integer ):Or a desire, an integer of infinite size, which is written into an integer and an L in upper or lower case.
• Float (actual floating point value ):The color car represents the real number, the decimal part divided by the integer part and the decimal part in writing. Floats may also be in scientific notation with E or Directive 10th power é (2.5e2 = 2.5 × 102 = 250 ).
• Complex (plural ):+ BJ form, where a and B are the square root of-1 represented by cars and J (or J) (this is a virtual number ). A is the real numeric part, and B is the virtual part. Do not use Python programming for plural numbers.
Here are some examples of numbers:
Int |
Long |
Float |
Complex |
10 |
51924361L |
0.0 |
3.14j |
100 |
-0x19323L |
15.20 |
45. j |
-786 |
0122L |
-21.9 |
9.322e-36j |
080 |
0 xDEFABCECBDAECBFBAEl |
32.3 + e18 |
. 876j |
-0490 |
535633629843L |
-90. |
-. 6545 + 0J |
-0x260 |
-052318172735L |
-32.54e100 |
3e + 26J |
0x69 |
-4721885298529L |
70.2-E12 |
4.53e-7j |
• Python allows you to use lowercase letters of L, but we recommend that you use only one uppercase letter of L to avoid confusion with number 1. The python long integer displays an uppercase letter (L.
• An ordered complex number is composed of a real floating point number + BJ, where a is the real part and B is the imaginary part of the plural.
Numeric type conversion:
The numeric conversion in Python contains a common mixed expression of rating types. But sometimes you need to explicitly force a number from one type to another operator or function parameters to meet the requirements.
• Int type (X) converts X to a common integer.
• Long (X) converts X to a long integer.
• Float type (X) converts X to a floating point number.
• Complex (x) converts X to a complex number from x to zero in Part x and imaginary. Complex types (X, Y) convert the nth and imaginary verbs of x and y. X and y are numeric expressions with the built-in number function:
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