Flask 应用程序超出 Python 最大递归深度

Question

这是错误：

maximum recursion depth exceeded while calling a Python object

我正在使用beautifulsoup解析从中接收到的网页 HTML，requests然后将解析后的数据存储到Product类中。该函数通过从 调用一个线程来运行ThreadPoolExecutor()。

运行功能：

executor = ThreadPoolExecutor()

t2 = executor.submit(ScrapePageFull, PageHtml)

product = t2.result()

ScrapePageFull功能：

def ScrapePageFull(data):

soup = BeautifulSoup(data)

product = Product()

# Price

price = soup.find(DIV, {ID: DATA_METRICS})[ASIN_PRICE]

product.price = float(price)

# ASIN

ASIN = soup.find(DIV, {ID: DATA_METRICS})[ASIN_ASIN]

product.asin = ASIN

# Title

title = soup.find(META, {NAME: TITLE})[CONTENT]

product.title = title

# Price String

price_string = soup.find(SPAN, {ID: PRICE_BLOCK}).text

product.price_string = price_string

return product

这是Product课程：

class Product:

def __init__(self):

    self.title = None

    self.price = None

    self.price_string = None

    self.asin = None

    pass

# Getters

@property

def title(self):

    return self.title

@property

def price(self):

    return self.price

@property

def asin(self):

    return self.asin

@property

def price_string(self):

    return self.price_string

# Setters

@title.setter

def title(self, title):

    self.title = title

@price.setter

def price(self, price):

    self.price = price

@asin.setter

def asin(self, asin):

    self.asin = asin

@price_string.setter

def price_string(self, price_string):

    self.price_string = price_string

感谢您的帮助，谢谢。

Answer 1

你在这里进入无限递归：@propertydef title(self):    return self.title返回self.title与再次调用此函数相同，因为定义一个名为的函数title会覆盖变量self.title。这也是无限递归：@title.setterdef title(self, title):    self.title = [e-mail]将重新定义赋值，比如从这个函数self.title = title中调用。self.title.setter(title)对于和 也是一样self.price的。self.price_stringself.asin要解决此问题，请重命名您的变量：def __init__(...):   self._title = None@propertydef title(self):    return self._title