Python Learning-data type (INT;FLOAT;BOOL;STR)

1/Data manipulation

* operator

The integer type is an addition operation, and the string is a merge operation.

-integer type is the subtraction operation

Integer is a multiplication, and the string is a repeating operation.

Integer division operations retain only integers, floating-point number divisions retain floating-point numbers

%; Integer division takes remainder operation

* *; Integer power operation

> greater than, note that different types cannot be compared

< less than, note that different types cannot be compared

= = equals, note that different types cannot be compared

! =; Not equal, note different types cannot compare

=; Assign a value

*round () rounding, configurable reserved decimal digits parameter

1 Round (2.6)2 > 33 round (2.3)4 > 25 round (2.6 , 0) 6 > 3.07 Round (2.6, 1)8 > 2.6

*type () to determine the data type function

1 type (123)2int3 type ('abc') 4 Str 5 Type (3.2)6 float

*len () Number of statistics strings

1 ' ABC ' 2 Len (a) 3 345 len ('abc')6 3

*or;

1TureorTure2>Ture3TureorFalse4>Ture5 false ro False6>False7 8Ture andTure9>TureTenTure andFalse One>False AFalse andFalse -> False

2/int integer

Integer

3/float floating Point

Decimal

4/bool Boolean value

*true the right

*false the wrong

Python Learning-data type (INT;FLOAT;BOOL;STR)