Python链式调用数据处理实际应用实例探究

class ChainExample:
    def __init__(self, value):
        self.value = value
    def add(self, x):
        self.value += x
        return self
    def multiply(self, x):
        self.value *= x
        return self
    def subtract(self, x):
        self.value -= x
        return self
    def display(self):
        print(f"Current value: {self.value}")
        return self
# 使用链式调用
result = (
    ChainExample(10)
    .add(5)
    .multiply(2)
    .subtract(3)
    .display()
)

class Config:
    def __init__(self):
        self.verbose = False
        self.debug = False
        self.log_file = None
    def enable_verbose(self):
        self.verbose = True
        return self
    def enable_debug(self):
        self.debug = True
        return self
    def set_log_file(self, file_name):
        self.log_file = file_name
        return self
    def display(self):
        print(f"Verbose: {self.verbose}, Debug: {self.debug}, Log File: {self.log_file}")
        return self
# 链式调用配置对象
config = (
    Config()
    .enable_verbose()
    .enable_debug()
    .set_log_file("app.log")
    .display()
)

data = [1, 2, 3, 4, 5]

result = (
    ChainExample(data)
    .apply(lambda x: [i * 2 for i in x])  # 将数据乘以2
    .apply(lambda x: list(filter(lambda i: i > 5, x)))  # 过滤大于5的数据
    .display()
)