python自学第二天之基本运算符

print(1 + 1)
print(1 - 1)
print(1*2)
print(1/2)

print(10%3)   #计算余数   10/3=3...1

print(10//3)  #整除/地板除，    计算商

print(5**2)  #5的2次幂  m**n  m的n次幂

a = 20
b = 10
print(a == b)  # 等于
print(a != b)  #不等于

应用：

n = 49
if n %2 == 1:
    print("奇数")
else:
    print("偶数")

a = 1
b = 2
a += b   #相当于 a = a+ b