46 lines
1.0 KiB
Python
46 lines
1.0 KiB
Python
# 算术(数学)运算符
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# 1.+
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# print(1 + 2) # 3
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# print(1 + 2 + 3) # 6
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# 注意字符串,拼接
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# print('hello' + 'world') # helloworld
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# 2.-
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# 数字相减
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# print(7 - 9) # -2
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# print('zhang' - 'li') # 报错
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# 3.*
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# print(2 * 3) # 6
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# 数字相乘
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# print('zhang' * 'li') # 报错
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# 4./
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# print(8/3) # 2.6666666666666665
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# 数字相除
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# print(8/0) # 报错，除数不能为0
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# 5.// 取整除，商的整数部分，数字参与运算
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# print(9 // 2) # 4
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# print(9 // 3) # 3
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# 6.% 取余数，求模
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# print(9 % 2) # 1
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# print(10 % 2) # 0
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# 余数的意义：求奇数偶数，求是否可以整除......
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# 7.** 求幂(指数)
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# print(2 ** 3) # 2的3次方，2是底数，3是指数 结果:8
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# print(12 ** 2) # 144
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# 特殊情况
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# 两个布尔值的运算，True=1 False=0
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print(True + True) # 1 + 1 = 2
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print(True - True) # 1 - 1 = 0
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print(True * True) # 1 * 1 = 1
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print(True / True) # 1 / 1 = 1.0
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print(True // True) # 1 // 1 = 1
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print(True % True) # 1 % 1 = 0
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print(True ** True) # 1 ** 1 = 1
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print(True + False) # 1 + 0 = 1 |