python牛头代码
时间: 2024-03-15 10:40:00 浏览: 31
Python的牛头代码是指一种简洁、高效的编程风格,它以简洁明了的语法和优雅的表达方式而闻名。以下是一些常见的Python牛头代码示例:
1. 列表推导式:
```
numbers = [1, 2, 3, 4, 5]
squares = [x**2 for x in numbers]
```
2. 字典推导式:
```
numbers = [1, 2, 3, 4, 5]
squares_dict = {x: x**2 for x in numbers}
```
3. 条件表达式:
```
x = 10
result = "Even" if x % 2 == 0 else "Odd"
```
4. 使用enumerate函数同时遍历索引和元素:
```
fruits = ['apple', 'banana', 'orange']
for index, fruit in enumerate(fruits):
print(index, fruit)
```
5. 使用zip函数同时遍历多个列表:
```
names = ['Alice', 'Bob', 'Charlie']
ages = [25, 30, 35]
for name, age in zip(names, ages):
print(name, age)
```
6. 使用with语句自动管理资源:
```
with open('file.txt', 'r') as file:
content = file.read()
```
7. 使用装饰器简化代码重复:
```
def log(func):
def wrapper(*args, **kwargs):
print("Calling function:", func.__name__)
return func(*args, **kwargs)
return wrapper
@log
def add(a, b):
return a + b
```