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Update 第04课：Python语言元素之运算符.md #36

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4 changes: 2 additions & 2 deletions 第04课：Python语言元素之运算符.md
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Expand Up @@ -6,7 +6,7 @@ Python语言支持很多种运算符，我们先用一个表格为大家列出
| ------------------------------------------------------------ | ------------------------------ |
| `[]` `[:]` | 下标，切片 |
| `**` | 指数 |
| `~` `+` `-` | 按位取反, 正负号 |
| `~` `+` `-` | 按位取反, 正号，负号 |
| `*` `/` `%` `//` | 乘，除，模，整除 |
| `+` `-` | 加，减 |
| `>>` `<<` | 右移，左移 |
Expand Down Expand Up @@ -59,7 +59,7 @@ a *= a + 2 # 相当于：a = a * (a + 2)
print(a) # 算一下这里会输出什么
```

###比较运算符和逻辑运算符
### 比较运算符和逻辑运算符

比较运算符有的地方也称为关系运算符，包括`==`、`!=`、`<`、`>`、`<=`、`>=`，我相信没有什么好解释的，大家一看就能懂，需要提醒的是比较相等用的是`==`，请注意这里是两个等号，因为`=`是赋值运算符，我们在上面刚刚讲到过，`==`才是比较相等的运算符；比较不相等用的是`!=`，这不同于数学上的不等号，Python 2中曾经使用过`<>`来表示不等关系，大家知道就可以了。比较运算符会产生布尔值，要么是`True`要么是`False`。

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