Getting started with Python from scratch (4) Operations

Python operators are similar to those in other languages.

(Currently, we only know the basic usage of these operators, so that we can expand the following content. Advanced applications are not introduced at the moment)

Mathematical operations

Copy codeThe Code is as follows:
>>> Print 1 + 9 # Addition

>>> Print 1.3-4 # Subtraction

>>> Print 3*5 # Multiplication

>>> Print 4.5/1.5 # Division

>>> Print 3 ** 2 # multiplication party

>>> Print 10% 3 # Calculate the remainder

Judgment

Returns True/False if it is True or False.

Copy codeThe Code is as follows:
>>> Print 5 = 6 #=, equal

>>> Print 8.0! = 8.0 #! =, Not equal

>>> Print 3 <3, 3 <= 3 # <, less than; <=, less than or equal

>>> Print 4> 5, 4> = 0 #>, greater than; >=, greater than or equal

>>> Print 5 in [1, 3, 5] #5 is an element of list [1, 3, 5 ].

There are also is, is not, and so on, not in-depth)

Logical operation

Operation between True and False

Copy codeThe Code is as follows:
>>> Print True and True, True and False # and, "and", both are True.

>>> Print True or False # or, "or" operation. If one of them is True, it is True.

>>> Print not True # not, non operation, Inverse Operation

It can be used with the previous part to do some exercises, such:

Copy codeThe Code is as follows:
>>> Print 5 = 6 or 3> = 3

Summary

Mathematics +,-, *,/, **, %

Judgment = ,! =,>,> =, <, <=, In

Logic and, or, not