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从Beautifulsoup标签中提取src

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我试图使用beautifulsoup刮取newegg的产品名称，描述，价格和图像 . 我有以下bs4.element.Tag类型，我想从标签中提取“src”链接 . 以下是我的标签：

df = <a class="itemImage" href="http://www.newegg.com/Product/Product.aspx?Item=N82E16875169194&amp;cm_re=Samsung_edge-_-75-169-194-_-Product" id="img_75-169-194" title='Samsung Galaxy S7 Edge Dual SIM Unlocked Smart Phone, Dual Edge 5.5" AMOLED Display, black Color, 32GB Storage 4GB RAM International Version - No US Warranty'>\n<img alt='Samsung Galaxy S7 Edge Dual SIM Unlocked Smart Phone, Dual Edge 5.5" AMOLED Display, black Color, 32GB Storage 4GB RAM International Version - No US Warranty' src="http://images10.newegg.com/ProductImageCompressAll200/75-169-194-04.jpg" title='Samsung Galaxy S7 Edge Dual SIM Unlocked Smart Phone, Dual Edge 5.5" AMOLED Display, black Color, 32GB Storage 4GB RAM International Version - No US Warranty'/>\n</a>

我怎样才能提取出来

src="http://images10.newegg.com/ProductImageCompressAll200/75-169-194-04.jpg"

从这个标签？我试过了

df.attrs['src']

但我收到了Keyerror .

python-2.7 beautifulsoup

2 回答

  • 1

    src在img标签中：

    from bs4 import BeautifulSoup
tag = """<a class="itemImage" href="http://www.newegg.com/Product/Product.aspx?Item=N82E16875169194&amp;cm_re=Samsung_edge-_-75-169-194-_-Product" id="img_75-169-194" title='Samsung Galaxy S7 Edge Dual SIM Unlocked Smart Phone, Dual Edge 5.5" AMOLED Display, black Color, 32GB Storage 4GB RAM International Version - No US Warranty'>\n<img alt='Samsung Galaxy S7 Edge Dual SIM Unlocked Smart Phone, Dual Edge 5.5" AMOLED Display, black Color, 32GB Storage 4GB RAM International Version - No US Warranty' src="http://images10.newegg.com/ProductImageCompressAll200/75-169-194-04.jpg" title='Samsung Galaxy S7 Edge Dual SIM Unlocked Smart Phone, Dual Edge 5.5" AMOLED Display, black Color, 32GB Storage 4GB RAM International Version - No US Warranty'/>\n</a>"""

soup = BeautifulSoup(tag,"lxml")

src = soup.img["src"]

    哪个会给你：

    http://images10.newegg.com/ProductImageCompressAll200/75-169-194-04.jpg
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  • -1

    在python引用中尝试正则表达式
    https://docs.python.org/2/library/re.html

    import re
s = """
    <a class="itemImage" href="http://www.newegg.com/Product/Product.aspx?Item=N82E16875169194&amp;cm_re=Samsung_edge-_-75-169-194-_-Product" id="img_75-169-194" title='Samsung Galaxy S7 Edge Dual SIM Unlocked Smart Phone, Dual Edge 5.5" AMOLED Display, black Color, 32GB Storage 4GB RAM International Version - No US Warranty'>\n<img alt='Samsung Galaxy S7 Edge Dual SIM Unlocked Smart Phone, Dual Edge 5.5" AMOLED Display, black Color, 32GB Storage 4GB RAM International Version - No US Warranty' src="http://images10.newegg.com/ProductImageCompressAll200/75-169-194-04.jpg" title='Samsung Galaxy S7 Edge Dual SIM Unlocked Smart Phone, Dual Edge 5.5" AMOLED Display, black Color, 32GB Storage 4GB RAM International Version - No US Warranty'/>\n</a>
    """
src_list = re.findall("src=[^\s]*", s)

    输出：

    src_list = ['src="http://images10.newegg.com/ProductImageCompressAll200/75-169-194-04.jpg"']
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