Updated recipe for New Scientist

[kiavash]

Two small changes in the code that significantly improved the outcome:

1. Added a procedure to omit duplicates of articles
   
   Spoiler:

   PHP Code:

   ...
    filterDuplicates = True
    url_list = []
...
    def print_version(self, url):
        if self.filterDuplicates:
            if url in self.url_list:
                return
        self.url_list.append(url)
        return url + '?full=true&print=true' 

2. Added an option to convert images to gray scale if needed
   
   Spoiler:

   PHP Code:

   ...
    Convert_Grayscale = True
...
    def postprocess_html(self, soup, first):
        if self.Convert_Grayscale:
            #process all the images
            for tag in soup.findAll(lambda tag: tag.name.lower()=='img' and tag.has_key('src')):
                iurl = tag['src']
                img = Image()
                img.open(iurl)
                if img < 0:
                    raise RuntimeError('Out of memory')
                img.type = "GrayscaleType"
                img.save(iurl)
        return soup 


To all the science fans who also love Calibre

[HaroldFuchs]

Tried this usingWindows 11, 64 bit Calibre 6.29. It failed.Below is the "log file" it produced.

I don't know Python or RSS or ...

Line 71 of the code (see last line of log, below) says
"br = BasicNewsRecipe.get_browser()".
I tried changing it to
"br = BasicNewsRecipe.get_browser(self)"
and just got a different error with a longer log file

Help. Please.
===== log file ===
calibre, version 6.29.0 (win32, embedded-python: True)
Conversion error: Failed: Fetch news from New Scientist - Online News w. subscription

Fetch news from New Scientist - Online News w. subscription
Conversion options changed from defaults:
verbose: 2
output_profile: 'kobo'
Resolved conversion options
calibre version: 6.29.0
{'asciiize': False,
'author_sort': None,
'authors': None,
'base_font_size': 0,
'book_producer': None,
'change_justification': 'original',
'chapter': None,
'chapter_mark': 'pagebreak',
'comments': None,
'cover': None,
'debug_pipeline': None,
'dehyphenate': True,
'delete_blank_paragraphs': True,
'disable_font_rescaling': False,
'dont_download_recipe': False,
'dont_split_on_page_breaks': True,
'duplicate_links_in_toc': False,
'embed_all_fonts': False,
'embed_font_family': None,
'enable_heuristics': False,
'epub_flatten': False,
'epub_inline_toc': False,
'epub_max_image_size': 'none',
'epub_toc_at_end': False,
'epub_version': '2',
'expand_css': False,
'extra_css': None,
'extract_to': None,
'filter_css': None,
'fix_indents': True,
'flow_size': 260,
'font_size_mapping': None,
'format_scene_breaks': True,
'html_unwrap_factor': 0.4,
'input_encoding': None,
'input_profile': <calibre.customize.profiles.InputProfile object at 0x0000027B8B106EF0>,
'insert_blank_line': False,
'insert_blank_line_size': 0.5,
'insert_metadata': False,
'isbn': None,
'italicize_common_cases': True,
'keep_ligatures': False,
'language': None,
'level1_toc': None,
'level2_toc': None,
'level3_toc': None,
'line_height': 0,
'linearize_tables': False,
'lrf': False,
'margin_bottom': 5.0,
'margin_left': 5.0,
'margin_right': 5.0,
'margin_top': 5.0,
'markup_chapter_headings': True,
'max_toc_links': 50,
'minimum_line_height': 120.0,
'no_chapters_in_toc': False,
'no_default_epub_cover': False,
'no_inline_navbars': False,
'no_svg_cover': False,
'output_profile': <calibre.customize.profiles.KoboReaderOutput object at 0x0000027B8B107580>,
'page_breaks_before': None,
'prefer_metadata_cover': False,
'preserve_cover_aspect_ratio': False,
'pretty_print': True,
'pubdate': None,
'publisher': None,
'rating': None,
'read_metadata_from_opf': None,
'remove_fake_margins': True,
'remove_first_image': False,
'remove_paragraph_spacing': False,
'remove_paragraph_spacing_indent_size': 1.5,
'renumber_headings': True,
'replace_scene_breaks': '',
'search_replace': None,
'series': None,
'series_index': None,
'smarten_punctuation': False,
'sr1_replace': '',
'sr1_search': '',
'sr2_replace': '',
'sr2_search': '',
'sr3_replace': '',
'sr3_search': '',
'start_reading_at': None,
'subset_embedded_fonts': False,
'tags': None,
'test': False,
'timestamp': None,
'title': None,
'title_sort': None,
'toc_filter': None,
'toc_threshold': 6,
'toc_title': None,
'transform_css_rules': None,
'transform_html_rules': None,
'unsmarten_punctuation': False,
'unwrap_lines': True,
'use_auto_toc': False,
'verbose': 2}
InputFormatPlugin: Recipe Input running
Downloading recipe urn: custom:1000
Traceback (most recent call last):
File "runpy.py", line 196, in _run_module_as_main
File "runpy.py", line 86, in _run_code
File "site.py", line 83, in <module>
File "site.py", line 78, in main
File "site.py", line 50, in run_entry_point
File "calibre\utils\ipc\worker.py", line 215, in main
File "calibre\gui2\convert\gui_conversion.py", line 31, in gui_convert_recipe
File "calibre\gui2\convert\gui_conversion.py", line 25, in gui_convert
File "calibre\ebooks\conversion\plumber.py", line 1108, in run
File "calibre\customize\conversion.py", line 242, in __call__
File "calibre\ebooks\conversion\plugins\recipe_input.py ", line 138, in convert
File "calibre\web\feeds\news.py", line 946, in __init__
File "<string>", line 71, in get_browser
TypeError: BasicNewsRecipe.get_browser() missing 1 required positional argument: 'self'
=== end of log ===

[HaroldFuchs]

Please forget the above. I found New Scientist built into Calibre, just not where I looked at first which was in the English (UK) section. Apologies for wasting your time.