正则表达式匹配赋值语句
正则表达式是一种强大的文本匹配工具,可以用于快速识别和提取特定格式的文本。在编程中,赋值语句是一种常见的语句,用于将值赋给变量。下面是使用正则表达式匹配赋值语句的示例:
1. 匹配整数赋值语句:
```python
x = 10
y = -5
z = 0
```
2. 匹配浮点数赋值语句:
```python
pi = 3.14159
e = 2.71828
```
3. 匹配字符串赋值语句:
```python
name = "John"
message = "Hello, world!"
```
4. 匹配布尔值赋值语句:
```python
正则匹配方法is_true = True
is_false = False
```
5. 匹配列表赋值语句:
```python
numbers = [1, 2, 3, 4, 5]
names = ["Alice", "Bob", "Charlie"]
```
6. 匹配字典赋值语句:
```python
person = {"name": "John", "age": 30, "city": "New York"}
grades = {"math": 90, "science": 85, "english": 95}
```
7. 匹配元组赋值语句:
```python
point = (3, 4)
colors = ("red", "green", "blue")
```
8. 匹配多重赋值语句:
```python
x, y = 10, 20
a, b, c = "a", "b", "c"
```
9. 匹配赋值语句中的加法运算:
```python
result = 10 + 20
total = x + y + z
```
10. 匹配赋值语句中的条件判断:
```python
is_positive = x > 0
is_even = y % 2 == 0
```

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