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How to pass a user defined argument in scrapy spider
...gs):
self.start_urls = [f'http://www.example.com/{category}'] # py36
super().__init__(**kwargs) # python3
def parse(self, response)
self.log(self.domain) # system
Taken from the Scrapy doc: http://doc.scrapy.org/en/latest/topics/spiders.html#spider-arguments
Update...
Java regular expression OR operator
...wn:
"string1|string2"
for example:
String s = "string1, string2, string3";
System.out.println(s.replaceAll("string1|string2", "blah"));
Output:
blah, blah, string3
The main reason to use parentheses is to limit the scope of the alternatives:
String s = "string1, string2, string3";
System.o...
pip broke. how to fix DistributionNotFound error?
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edited Dec 12 '14 at 3:24
Jens
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answered Aug...
Convert a char to upper case using regular expressions (EditPad Pro)
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George Stocker
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answered Jul 21 '09 at 14:01
akfakf
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Initialize parent's protected members with initialization list (C++)
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answered Feb 18 '10 at 17:33
philsquaredphilsquared
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Which $_SERVER variables are safe?
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edited May 23 '17 at 12:10
Community♦
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answered Jun 25 '11 at 0:12
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JPA or JDBC, how are they different?
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243
In layman's terms:
JDBC is a standard for Database Access
JPA is a standard for ORM
JDBC is ...
What are “sugar”, “desugar” terms in context of Java 8?
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136
sugar, in programming, usually refers to those sweet additions, mostly shortcuts, that make som...
Android studio: why are minSdkVersion and targetSdkVersion specified both in AndroidManifest.xml and
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edited Oct 20 '16 at 13:21
coltox
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answered Nov 15 '13 at 14:04
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Do you have to put Task.Run in a method to make it async?
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