# 第26組
**第26組組員： 110211025 黃巧瓈 110211015 吳玗苀 110251018 李佳臻 110251021 潘妘昕**
## **<font color="#9E25F6">2022年2月14日</font>**
### **Python Arithmetic Operators 算數運算子**
> Arithmetic operators are used with numeric values to perform common mathematical operations:
| Operator | Name | 備註 | Example |
|:--------:|:--------------:|:------:|:-------:|
| + | Addition | 加法 | x + y |
| - | Subtraction | 減法 | x - y |
| * | Multiplication | 乘法 | x * y |
| / | Division | 除法 | x / y |
| % | Modulus | 求餘數 | x % y |
| ** | Exponentiation | 求次方 | x ** y |
| // | Floor division | 求商 | x // y |
### **Python Assignment Operators 指派運算子**
> Assignment operators are used to assign values to variables:
| Operator | Example | Same As | 講述 |
|:--------:|:--------:|:---------- |:------------- |
| = | x = 2 | x = 2 | 把2指定給x |
| += | x += 3 | x = x + 3 | 把x+3指定給x |
| -= | x -= 3 | x = x - 3 | 把x-3指定給x |
| *= | x *= 3 | x = x * 3 | 把x*3指定給x |
| /= | x /= 3 | x = x / 3 | 把x/3指定給x |
| %= | x %= 3 | x = x % 3 | 把x%3指定給x |
| //= | x //= 3 | x = x // 3 | 把x//3指定給x |
| **= | x **= 3 | x = x ** 3 | 把x**3指定給x |
```python=
x=5
x-=1
print(x)
# 4
```
課堂練習-計算BMI值:BMI = 體重 (kg) / 身高 (m^2^)
(身高:165 體重:50 女)
```python
x=50
y=1.65
print(x/y**2)
#18.4
```
### **Python Comparison Operators 比較運算子**
> Comparison operators are used to compare two values
用來比較兩個值:
| Operator | Name | 備註 | Example |
|:--------:|:------------------------:|:---------- |:-------:|
| == | Equal | 等於 | x == y |
| != | Not equal | 不等於 | x != y |
| > | Greater than | 大於 | x > y |
| < | Less than | 小於 | x < y |
| >= | Greater than or equal to | 大於或等於 | x >= y |
| <= | Less than or equal to | 小於或等於 | x <= y |
```python=
x = 7
y = 6
print(x == y)
#returns False because 7 is not equal to 6
```
```python=
x = 3
y = 1
print(x <= y)
#returns False because 3 is neither less than or equal to 1
```
### **Python Logical Operators 邏輯運算子**
>Logical operators are used to combine conditional
| Operator| Name |Example |
| -------- | -------- | --- |
| and | 且 | x < 5 and x < 10 |
| or | 或 |x < 5 or x < 4|
| not| 皆不滿足條件 |not(x < 5 and x < 10) |
### **Python Identity Operators 身份運算子**
| Operator | 描述 | Example |
|:-------- |:------------------------------------ |:---------- |
| is | 如果兩個變量是同一個對象，則為True | x is y |
| is not | 如果兩個變量不是同一個對象，則為True | x is not y |
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