Scrapy - Use feed exporter for a particular spider (and not others) in a project
ENVIRONMENT:
Windows7, Python 3.6.5, Scrapy 1.5.1
PROBLEM DESCRIPTION:
I have a scrapy project called project_github, which contains 3 spiders:spider1, spider2, spider3. Each of these spiders scrapes data from a particular website individual to that spider.
I am trying to automatically export a JSON file when a particular spider is executed, with the format: NameOfSpider_TodaysDate.json, so that from the command line I can:
Execute the script scrapy crawl spider1 which returns spider1_181115.json
Currently I am using ITEM EXPORTERS in settings.py with the following code:
import datetime
FEED_URI = 'spider1_' + datetime.datetime.today().strftime('%y%m%d') + '.json'
FEED_FORMAT = 'json'
FEED_EXPORTERS = {'json': 'scrapy.exporters.JsonItemExporter'}
FEED_EXPORT_ENCODING = 'utf-8'
Obviously this code always writes spider1_TodaysDate.json regardless of the spider used... Any suggestions?
python json scrapy
asked Nov 15 '18 at 11:52
johnnydoejohnnydoe
236
add a comment |
ENVIRONMENT:
Windows7, Python 3.6.5, Scrapy 1.5.1
PROBLEM DESCRIPTION:
I have a scrapy project called project_github, which contains 3 spiders:spider1, spider2, spider3. Each of these spiders scrapes data from a particular website individual to that spider.
I am trying to automatically export a JSON file when a particular spider is executed, with the format: NameOfSpider_TodaysDate.json, so that from the command line I can:
Execute the script scrapy crawl spider1 which returns spider1_181115.json
Currently I am using ITEM EXPORTERS in settings.py with the following code:
import datetime
FEED_URI = 'spider1_' + datetime.datetime.today().strftime('%y%m%d') + '.json'
FEED_FORMAT = 'json'
FEED_EXPORTERS = {'json': 'scrapy.exporters.JsonItemExporter'}
FEED_EXPORT_ENCODING = 'utf-8'
Obviously this code always writes spider1_TodaysDate.json regardless of the spider used... Any suggestions?
python json scrapy
asked Nov 15 '18 at 11:52
johnnydoejohnnydoe
236
add a comment |
ENVIRONMENT:
Windows7, Python 3.6.5, Scrapy 1.5.1
PROBLEM DESCRIPTION:
I have a scrapy project called project_github, which contains 3 spiders:spider1, spider2, spider3. Each of these spiders scrapes data from a particular website individual to that spider.
I am trying to automatically export a JSON file when a particular spider is executed, with the format: NameOfSpider_TodaysDate.json, so that from the command line I can:
Execute the script scrapy crawl spider1 which returns spider1_181115.json
Currently I am using ITEM EXPORTERS in settings.py with the following code:
import datetime
FEED_URI = 'spider1_' + datetime.datetime.today().strftime('%y%m%d') + '.json'
FEED_FORMAT = 'json'
FEED_EXPORTERS = {'json': 'scrapy.exporters.JsonItemExporter'}
FEED_EXPORT_ENCODING = 'utf-8'
Obviously this code always writes spider1_TodaysDate.json regardless of the spider used... Any suggestions?
python json scrapy
asked Nov 15 '18 at 11:52
johnnydoejohnnydoe
236
ENVIRONMENT:
Windows7, Python 3.6.5, Scrapy 1.5.1
PROBLEM DESCRIPTION:
I have a scrapy project called project_github, which contains 3 spiders:spider1, spider2, spider3. Each of these spiders scrapes data from a particular website individual to that spider.
I am trying to automatically export a JSON file when a particular spider is executed, with the format: NameOfSpider_TodaysDate.json, so that from the command line I can:
Execute the script scrapy crawl spider1 which returns spider1_181115.json
Currently I am using ITEM EXPORTERS in settings.py with the following code:
import datetime
FEED_URI = 'spider1_' + datetime.datetime.today().strftime('%y%m%d') + '.json'
FEED_FORMAT = 'json'
FEED_EXPORTERS = {'json': 'scrapy.exporters.JsonItemExporter'}
FEED_EXPORT_ENCODING = 'utf-8'
Obviously this code always writes spider1_TodaysDate.json regardless of the spider used... Any suggestions?
python json scrapy
python json scrapy
asked Nov 15 '18 at 11:52
johnnydoejohnnydoe
236
asked Nov 15 '18 at 11:52
johnnydoejohnnydoe
236
asked Nov 15 '18 at 11:52
johnnydoejohnnydoe
236
asked Nov 15 '18 at 11:52
johnnydoejohnnydoe
236
asked Nov 15 '18 at 11:52
johnnydoejohnnydoe
236
236
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
The way to do this is by defining custom_settings as a class attribute under the specific spider were are writing the item exporter for. Spider settings override project settings.
So, for spider1:
from scrapy.settings.default_settings import FEED_EXPORT_ENCODING, FEED_EXPORTERS, FEED_FORMAT, FEED_URI
class spider1(scrapy.Spider):
name = "spider1"
allowed_domains =
custom_settings = {
FEED_URI: 'spider1_' + datetime.datetime.today().strftime('%y%m%d') + '.json',
FEED_FORMAT: 'json',
FEED_EXPORTERS: {
'json': 'scrapy.exporters.JsonItemExporter',
},
FEED_EXPORT_ENCODING: 'utf-8',
}
answered Nov 15 '18 at 15:41
johnnydoejohnnydoe
236
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
The way to do this is by defining custom_settings as a class attribute under the specific spider were are writing the item exporter for. Spider settings override project settings.
So, for spider1:
from scrapy.settings.default_settings import FEED_EXPORT_ENCODING, FEED_EXPORTERS, FEED_FORMAT, FEED_URI
class spider1(scrapy.Spider):
name = "spider1"
allowed_domains =
custom_settings = {
FEED_URI: 'spider1_' + datetime.datetime.today().strftime('%y%m%d') + '.json',
FEED_FORMAT: 'json',
FEED_EXPORTERS: {
'json': 'scrapy.exporters.JsonItemExporter',
},
FEED_EXPORT_ENCODING: 'utf-8',
}
answered Nov 15 '18 at 15:41
johnnydoejohnnydoe
236
add a comment |
The way to do this is by defining custom_settings as a class attribute under the specific spider were are writing the item exporter for. Spider settings override project settings.
So, for spider1:
from scrapy.settings.default_settings import FEED_EXPORT_ENCODING, FEED_EXPORTERS, FEED_FORMAT, FEED_URI
class spider1(scrapy.Spider):
name = "spider1"
allowed_domains =
custom_settings = {
FEED_URI: 'spider1_' + datetime.datetime.today().strftime('%y%m%d') + '.json',
FEED_FORMAT: 'json',
FEED_EXPORTERS: {
'json': 'scrapy.exporters.JsonItemExporter',
},
FEED_EXPORT_ENCODING: 'utf-8',
}
answered Nov 15 '18 at 15:41
johnnydoejohnnydoe
236
add a comment |
The way to do this is by defining custom_settings as a class attribute under the specific spider were are writing the item exporter for. Spider settings override project settings.
So, for spider1:
from scrapy.settings.default_settings import FEED_EXPORT_ENCODING, FEED_EXPORTERS, FEED_FORMAT, FEED_URI
class spider1(scrapy.Spider):
name = "spider1"
allowed_domains =
custom_settings = {
FEED_URI: 'spider1_' + datetime.datetime.today().strftime('%y%m%d') + '.json',
FEED_FORMAT: 'json',
FEED_EXPORTERS: {
'json': 'scrapy.exporters.JsonItemExporter',
},
FEED_EXPORT_ENCODING: 'utf-8',
}
answered Nov 15 '18 at 15:41
johnnydoejohnnydoe
236
The way to do this is by defining custom_settings as a class attribute under the specific spider were are writing the item exporter for. Spider settings override project settings.
So, for spider1:
from scrapy.settings.default_settings import FEED_EXPORT_ENCODING, FEED_EXPORTERS, FEED_FORMAT, FEED_URI
class spider1(scrapy.Spider):
name = "spider1"
allowed_domains =
custom_settings = {
FEED_URI: 'spider1_' + datetime.datetime.today().strftime('%y%m%d') + '.json',
FEED_FORMAT: 'json',
FEED_EXPORTERS: {
'json': 'scrapy.exporters.JsonItemExporter',
},
FEED_EXPORT_ENCODING: 'utf-8',
}
answered Nov 15 '18 at 15:41
johnnydoejohnnydoe
236
answered Nov 15 '18 at 15:41
johnnydoejohnnydoe
236
answered Nov 15 '18 at 15:41
johnnydoejohnnydoe
236
answered Nov 15 '18 at 15:41
johnnydoejohnnydoe
236
236
add a comment |
add a comment |
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