高效编码的 Python 技巧和窍门
提示 1：虚拟环境
设置虚拟环境以隔离项目依赖关系。它将项目的依赖项与系统范围的依赖项分开，确保一个干净且可重现的环境。
# Create a virtual environment
python -m venv myenv
# Activate the virtual environment
source myenv/bin/activate # On Unix or MacOS
myenv\Scripts\activate # On Windows提示 2：列表推导式
使用列表推导式获取简洁易读的代码。它们是在一行中创建列表的强大工具。
# Traditional approach
squared_numbers = []
for num in range(1, 6):
squared_numbers.append(num ** 2)
# Using list comprehension
squared_numbers = [num ** 2 for num in range(1, 6)]提示 3：解包
利用元组解包来简化变量赋值。
# Without unpacking
coordinates = (3, 4)
x = coordinates[0]
y = coordinates[1]
# With unpacking
x, y = coordinates提示 4：f 字符串
采用 f 字符串进行字符串格式设置。它们简明扼要，语法清晰。
name = "John"
age = 30
# Traditional formatting
message = "My name is {} and I'm {} years old.".format(name, age)
# Using f-string
message = f"My name is {name} and I'm {age} years old."python提示 5：上下文管理器
利用上下文管理器（带语句）有效地处理资源管理。
# Without context manager
file = open("example.txt", "r")
content = file.read()
file.close()
# With context manager
with open("example.txt", "r") as file:
content = file.read()