[pre-commit.ci] auto fixes from pre-commit.com hooks

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nbconvert/exporters/html.py

@@ -26,12 +26,16 @@
 from nbformat import NotebookNode
 
 from nbconvert.filters.highlight import Highlight2HTML
-from nbconvert.filters.markdown_mistune import IPythonRenderer, MarkdownWithMath
+from nbconvert.filters.markdown_mistune import (
+    IPythonRenderer,
+    MarkdownWithMath,
+    extract_titles_from_markdown_input,
+)
 from nbconvert.filters.widgetsdatatypefilter import WidgetsDataTypeFilter
 from nbconvert.utils.iso639_1 import iso639_1
 
 from .templateexporter import TemplateExporter
-from nbconvert.filters.markdown_mistune import extract_titles_from_markdown_input
+
 
 def find_lab_theme(theme_name):
     """
@@ -257,8 +261,8 @@ def from_notebook_node(  # type:ignore[explicit-override, override]
             "highlight_code", Highlight2HTML(pygments_lexer=lexer, parent=self)
         )
         markdown_collection = ""
-        for cell in nb.cells:           
-            if cell.cell_type == 'markdown':
+        for cell in nb.cells:
+            if cell.cell_type == "markdown":
                 markdown_collection = markdown_collection + cell.source + "\n"
 
         resources["tableofcontents"] = extract_titles_from_markdown_input(markdown_collection)

nbconvert/exporters/templateexporter.py

@@ -684,8 +684,8 @@ def _init_resources(self, resources):
         return resources
 
     def include_tableofcontents(self, resources):
-        #if len(resources["tableofcontents"])>0:
-            return True
-        #else:
-            #return False
-        
+        # if len(resources["tableofcontents"])>0:
+        return True
+
+    # else:
+    # return False

nbconvert/filters/markdown_mistune.py

@@ -12,15 +12,15 @@
 from typing import Any, Callable, Dict, Iterable, Match, Optional, Tuple
 
 import bs4
+import mistune
+from mistune.renderers.markdown import MarkdownRenderer
 from pygments import highlight
 from pygments.formatters import HtmlFormatter
 from pygments.lexer import Lexer
 from pygments.lexers import get_lexer_by_name
 from pygments.util import ClassNotFound
 
 from nbconvert.filters.strings import add_anchor
-import mistune
-from mistune.renderers.markdown import MarkdownRenderer
 
 try:  # for Mistune >= 3.0
     from mistune import (  # type:ignore[attr-defined]
@@ -490,6 +490,7 @@ def markdown2html_mistune(source: str) -> str:
     """Convert a markdown string to HTML using mistune"""
     return MarkdownWithMath(renderer=IPythonRenderer(escape=False)).render(source)
 
+
 # Custom renderer to capture headings
 class HeadingExtractor(MarkdownRenderer):
     def __init__(self):
@@ -498,34 +499,33 @@ def __init__(self):
 
     def heading(self, text, level):
         self.headings.append((level, text))
-        return ''  # We return an empty string to avoid outputting the headings
+        return ""  # We return an empty string to avoid outputting the headings
+
 
-
-def extract_titles_from_markdown_input (markdown_input): 
+def extract_titles_from_markdown_input(markdown_input):
     # Markdown_input is a single string with all the markdown content concatenated
     # Initiate list of titles
     titles_array = []
-    
+
     # Instantiate the custom renderer
     renderer = HeadingExtractor()
-    
+
     # Create a Markdown parser with the custom renderer
     extract_titles = mistune.create_markdown(renderer=renderer)
-
 
     # Parse the Markdown
     extract_titles(markdown_input)
-   
+
     # renderer.headings is an array for each markdown element
-    #print(renderer.headings)
- 
+    # print(renderer.headings)
+
     # Extracted headings
     for level, title in renderer.headings:
-        children = title['children']
-        attrs = title['attrs']
-        raw_text= children[0]['raw']
-        level= attrs['level']
+        children = title["children"]
+        attrs = title["attrs"]
+        raw_text = children[0]["raw"]
+        level = attrs["level"]
         titles_array.append([level, raw_text])
-    
-    print(titles_array)    
-    return titles_array
+
+    print(titles_array)
+    return titles_array