Scrapy 2.10 Documentationcan be chosen from: iternodes, xml, and html. It’s recommended to use the iternodes iterator for performance reasons, since the xml and html iterators generate the whole DOM at once in order to parse it. to Python’s re module. Thus, using regexp functions in your XPath expressions may add a small performance penalty. Set operations These can be handy for excluding parts of a document tree before extracting in question whereas the CSS lookup is translated into XPath and thus runs more efficiently, so performance-wise its uses are limited to situations that are not easily described with CSS selectors. Parsel0 码力 | 419 页 | 1.73 MB | 1 年前3
Scrapy 2.4 Documentationcan be chosen from: iternodes, xml, and html. It’s recommended to use the iternodes iterator for performance reasons, since the xml and html iterators generate the whole DOM at once in order to parse it. to Python’s re module. Thus, using regexp functions in your XPath expressions may add a small performance penalty. Set operations These can be handy for excluding parts of a document tree before extracting in question whereas the CSS lookup is translated into XPath and thus runs more efficiently, so performance-wise its uses are limited to situations that are not easily described with CSS selectors. Parsel0 码力 | 354 页 | 1.39 MB | 1 年前3
Scrapy 2.9 Documentationcan be chosen from: iternodes, xml, and html. It’s recommended to use the iternodes iterator for performance reasons, since the xml and html iterators generate the whole DOM at once in order to parse it. to Python’s re module. Thus, using regexp functions in your XPath expressions may add a small performance penalty. Set operations These can be handy for excluding parts of a document tree before extracting in question whereas the CSS lookup is translated into XPath and thus runs more efficiently, so performance-wise its uses are limited to situations that are not easily described with CSS selectors. Parsel0 码力 | 409 页 | 1.70 MB | 1 年前3
Scrapy 2.8 Documentationcan be chosen from: iternodes, xml, and html. It’s recommended to use the iternodes iterator for performance reasons, since the xml and html iterators generate the whole DOM at once in order to parse it. to Python’s re module. Thus, using regexp functions in your XPath expressions may add a small performance penalty. Set operations These can be handy for excluding parts of a document tree before extracting in question whereas the CSS lookup is translated into XPath and thus runs more efficiently, so performance-wise its uses are limited to situations that are not easily described with CSS selectors. Parsel0 码力 | 405 页 | 1.69 MB | 1 年前3
Scrapy 2.11.1 Documentationcan be chosen from: iternodes, xml, and html. It’s recommended to use the iternodes iterator for performance reasons, since the xml and html iterators generate the whole DOM at once in order to parse it. to Python’s re module. Thus, using regexp functions in your XPath expressions may add a small performance penalty. Set operations These can be handy for excluding parts of a document tree before extracting in question whereas the CSS lookup is translated into XPath and thus runs more efficiently, so performance-wise its uses are limited to situations that are not easily described with CSS selectors. Parsel0 码力 | 425 页 | 1.76 MB | 1 年前3
Scrapy 2.11 Documentationcan be chosen from: iternodes, xml, and html. It’s recommended to use the iternodes iterator for performance reasons, since the xml and html iterators generate the whole DOM at once in order to parse it. to Python’s re module. Thus, using regexp functions in your XPath expressions may add a small performance penalty. Set operations These can be handy for excluding parts of a document tree before extracting in question whereas the CSS lookup is translated into XPath and thus runs more efficiently, so performance-wise its uses are limited to situations that are not easily described with CSS selectors. Parsel0 码力 | 425 页 | 1.76 MB | 1 年前3
Scrapy 2.11.1 Documentationcan be chosen from: iternodes, xml, and html. It’s recommended to use the iternodes iterator for performance reasons, since the xml and html iterators generate the whole DOM at once in order to parse it. to Python’s re module. Thus, using regexp functions in your XPath expressions may add a small performance penalty. Set operations These can be handy for excluding parts of a document tree before extracting in question whereas the CSS lookup is translated into XPath and thus runs more efficiently, so performance-wise its uses are limited to situations that are not easily described with CSS selectors. Parsel0 码力 | 425 页 | 1.79 MB | 1 年前3
Scrapy 2.6 Documentationcan be chosen from: iternodes, xml, and html. It’s recommended to use the iternodes iterator for performance reasons, since the xml and html iterators generate the whole DOM at once in order to parse it. to Python’s re module. Thus, using regexp functions in your XPath expressions may add a small performance penalty. 3.3. Selectors 59 Scrapy Documentation, Release 2.6.3 Set operations These can be in question whereas the CSS lookup is translated into XPath and thus runs more efficiently, so performance-wise its uses are limited to situations that are not easily described with CSS selectors. Parsel0 码力 | 384 页 | 1.63 MB | 1 年前3
Scrapy 2.2 Documentationcan be chosen from: iternodes, xml, and html. It’s recommended to use the iternodes iterator for performance reasons, since the xml and html iterators generate the whole DOM at once in order to parse it. to Python’s re module. Thus, using regexp functions in your XPath expressions may add a small performance penalty. Set operations These can be handy for excluding parts of a document tree before extracting in question whereas the CSS lookup is translated into XPath and thus runs more efficiently, so performance-wise its uses are limited to situations that are not easily described with CSS selectors. Parsel0 码力 | 348 页 | 1.35 MB | 1 年前3
Scrapy 2.3 Documentationcan be chosen from: iternodes, xml, and html. It’s recommended to use the iternodes iterator for performance reasons, since the xml and html iterators generate the whole DOM at once in order to parse it. to Python’s re module. Thus, using regexp functions in your XPath expressions may add a small performance penalty. Set operations These can be handy for excluding parts of a document tree before extracting in question whereas the CSS lookup is translated into XPath and thus runs more efficiently, so performance-wise its uses are limited to situations that are not easily described with CSS selectors. Parsel0 码力 | 352 页 | 1.36 MB | 1 年前3
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