Uploaded Test files

venv/Lib/site-packages/nbconvert/exporters/latex.py

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+"""LaTeX Exporter class"""
+
+# Copyright (c) Jupyter Development Team.
+# Distributed under the terms of the Modified BSD License.
+
+import os
+
+from traitlets import Unicode, default
+from traitlets.config import Config
+from jupyter_core.paths import jupyter_path
+
+from nbconvert.filters.highlight import Highlight2Latex
+from nbconvert.filters.filter_links import resolve_references
+from .templateexporter import TemplateExporter
+
+class LatexExporter(TemplateExporter):
+    """
+    Exports to a Latex template.  Inherit from this class if your template is
+    LaTeX based and you need custom transformers/filters.
+    If you don't need custom transformers/filters, just change the 
+    'template_file' config option.  Place your template in the special "/latex" 
+    subfolder of the "../templates" folder.
+    """
+    export_from_notebook = "LaTeX"
+
+    @default('file_extension')
+    def _file_extension_default(self):
+        return '.tex'
+
+
+    @default('template_data_paths')
+    def _template_data_paths_default(self):
+        return jupyter_path("nbconvert", "templates", "latex")
+
+    @default('template_name')
+    def _template_name_default(self):
+        return 'latex'
+
+    output_mimetype = 'text/latex'
+
+    def default_filters(self):
+        for x in super().default_filters():
+            yield x 
+        yield ('resolve_references', resolve_references)
+
+    @property
+    def default_config(self):
+        c = Config({
+            'NbConvertBase': {
+                'display_data_priority' : ['text/latex', 'application/pdf', 'image/png', 'image/jpeg', 'image/svg+xml', 'text/markdown', 'text/plain']
+                },
+             'ExtractOutputPreprocessor': {
+                    'enabled':True
+                 },
+             'SVG2PDFPreprocessor': {
+                    'enabled':True
+                 },
+             'LatexPreprocessor': {
+                    'enabled':True
+                 },
+             'SphinxPreprocessor': {
+                    'enabled':True
+                 },
+             'HighlightMagicsPreprocessor': {
+                    'enabled':True
+                 }
+         })
+        c.merge(super().default_config)
+        return c
+
+    def from_notebook_node(self, nb, resources=None, **kw):
+        langinfo = nb.metadata.get('language_info', {})
+        lexer = langinfo.get('pygments_lexer', langinfo.get('name', None))
+        highlight_code = self.filters.get('highlight_code', Highlight2Latex(pygments_lexer=lexer, parent=self))
+        self.register_filter('highlight_code', highlight_code)
+        
+        return super().from_notebook_node(nb, resources, **kw)
+
+    def _create_environment(self):
+        environment = super()._create_environment()
+
+        # Set special Jinja2 syntax that will not conflict with latex.
+        environment.block_start_string = "((*"
+        environment.block_end_string = "*))"
+        environment.variable_start_string = "((("
+        environment.variable_end_string = ")))"
+        environment.comment_start_string = "((="
+        environment.comment_end_string = "=))"
+
+        return environment