[Python study notes Day06] 2.4 python common operator

1. arithmetic operation marks

1.1 +, -, *, /

a = 5
b = 5
a = a + 3
b += 3
print(a,b)

operation result:

1.2 +=,*=, -=, /=

a = b = c = d = 10
a += 1
b -= 3
c *= 10
d /= 8
print(a,b,c,d)

operation result:

1.3 // floor division

print("地板除法")
print(10//3)
print(3.0//2) #得到一个最接近除数的数值类型

operation result:

Take the remainder 1.4%

print("取余数")
print(11%2)
print(5%3)

operation result:

1.5 ** exponentiation

print("幂运算")
print(3**3)

operation result:

2. Priority issues

Exponentiation> sign> arithmetic operators> Comparison operators> Logical Operators

Several operators, there is a priority problem

print(-3**2)
print(3**-2)

operation result:

3. Comparison operators

>, >=, <, <=, ==, !=

4. Logical Operators

and, or, not

The result is True / False

print(not 0)
print(not 4)

operation result: