Getting started with the zero-learning Python (quad) operation

Python operators are similar to other languages

(We only know the basic usage of these operators for the time being, so we could expand the content later, the advanced application is not introduced at the moment)

Mathematical operations

The 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 # exponentiation

>>>print 10%3 # seeking remainder

Judge

Judging whether it's true or false, return to True/false

The code is as follows:

>>>print 5==6 # =, equal

>>>print 8.0!=8.0 #! =, Unequal

>>>print 3<3, 3<=3 # <, less than; <=, less than or equal to

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

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

And is, are not, etc., temporarily not in depth)

Logical operations

Operations between the True/false

The code is as follows:

>>>print true and True, True and False # and, "and" operations, both are true

>>>print true or False # or, "or" operation, one of which is true is true

>>>print not True # not, "non" operation, negation

You can do some exercises with the previous section, such as:

The code is as follows:

>>>print 5==6 or 3>=3

Summarize

Math +,-, *,/, * *,%

Judge = =,! =,, >=, <, <=, in

Logical AND, or, not

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