不間斷 Python 挑戰 Day 3 - 基本數學運算

四則運算

# addition integer_x = 1 + 2　　　　　 # integer_x = 3 integer_x = integer_x + 1　 # integer_x = 3 + 1 = 4 integer_x += 1 　 # integer_x = 4 + 1 = 5 print(integer_x) # subtraction integer_x = 5 - 2 　　 # integer_x = 5 - 2 = 3 integer_x = integer_x - 1　　# integer_x = 3 - 1 = 2 integer_x -= 1 　　 # integer_x = 2 - 1 = 1 print(integer_x) # multiplication integer_x = 1 * 2 　　 # integer_x = 1 * 2 = 2 integer_x = integer_x * 2　　# integer_x = 2 * 2 = 4 integer_x *= 2 　　 # integer_x = 4 * 2 = 8 print(integer_x) # division integer_x = 8 / 2 　　# integer_x = 8 / 2 = 4.0 integer_x = integer_x / 2 # integer_x = 4.0 / 2 = 2.0 integer_x /= 2 　　 # integer_x = 2.0 / 2 = 1.0 print(integer_x) print(type(integer_x))

5 1 8 1.0 class 'float'

商數和餘數

# quotient integer_x = 5 // 2 # 5 / 2 = 2 ... 1 print(integer_x) integer_x = 5 integer_x //= 2 print(integer_x) # remainder integer_x = 5 % 2 # 5 / 2 = 2 ... 1 print(integer_x) integer_x = 5 integer_x %=2 print(integer_x)

2 2 1 1

次方

# exponent integer_x = 2 ** 3 # integer_x = 2 ^ 3 = 8 print(integer_x) integer_x = 2 integer_x **= 3 print(integer_x)

8 8

運算的優先順序

程式範例