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"info": {
"author": "Jay Carlson",
"author_email": "nop@nop.com",
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"description": "\n# Jinja2 and YAML for Jupyter\n\n### Please see [the full HTML version](https://nopdotcom.github.io/jinja-straight-demo.html).\n\nThe rest of this file is just the `nbconvert` into Markdown; it's hard to read. See [the HTML version](https://nopdotcom.github.io/jinja-straight-demo.html).\n\n------\n\nPeople use YAML and Jinja2 together; they're the core of Ansible. Sometimes you need a playground to figure out details of how they work. This magic provides both.\n\n**In:**\n\n```python\n%load_ext jinja_yaml_magic\n%reload_ext jinja_yaml_magic\n```\n\n(Ignore the warning for `%load_ext`/`%reload_ext`.)\n\n## YAML\n\n`%%yaml variable` parses the YAML in a cell into the named *variable*. \nIf you omit `variable`, the YAML is parsed into the variable `jinja_env`; it's also\nthen available through the history mechanism: `Out[3]` or `_3`.\n\n**In:**\n\n```python\n%%yaml\nnames:\n- Jay\n- Chris\n- Pat\n```\n\n\n**Out:**\n\n {'names': ['Jay', 'Chris', 'Pat']}\n\n\n\n**In:**\n\n```python\n%%jinja\n{{ names }}\n```\n\n**Out:**\n\n\n ['Jay', 'Chris', 'Pat']\n\n\n\n## Jinja2\n\nIf you just want to try out a quick template, write `%%jinja` at the top of a cell. Both the contents of `jinja_env` and notebook variables are available. Below, we're using `names` from the `%%yaml` above, and `separator` from the notebook.\n\n**In:**\n\n```python\nseparator = \", \"\n```\n\n**In:**\n\n```python\n%%jinja\n{{ names|sort|join(separator) }}\n```\n\n\n**Out:**\n\n Chris, Jay, Pat\n\n\n\n### Named templates\n\nYou may want to store Jinja2 code as a template.\n\n* You can reuse the template later in the notebook;\n* You can use Jinja2's powerful `extends`, `import`, and `include` mechanisms.\n\nThe template below is available under the name `fancy_names`. *Files in the current directory are also available as templates.*\n\n\n**In:**\n\n```python\n%%jinja_template fancy_names\n{% for name in names %}\n{{ name }} \n{%- endfor %}\n```\n\n**In:**\n\n```python\n%jinja --template fancy_names\n```\n\n**Out:**\n\n\n\n Jay \n Chris \n Pat \n\n\n\n### Formatting\n\nBy default, the result of running a `%jinja` template is formatted as \"pretty\" text.\nYou can choose other formats.\n\n|Type|...displays as|\n|----|----|\n|`--pretty`|A string, without quotes|\n|`--plain`|Python string literal|\n|`--html`|HTML|\n|`--svg`|SVG|\n|`--latex`|LaTeX|\n|`--markdown`|Markdown|\n|`--code`|Syntax-highlighted code|\n\n`--latex` requires MathJax to be loaded; it is by default. `--code` requires\na recent version of IPython.\n\n**In:**\n\n```python\n%jinja --template fancy_names --html\n```\n\n**Out:**\n\n\n\nJay \nChris \nPat \n\n\n\n### An SVG example\n\nFrom [https://medium.com/@heyoka/scratch-made-svg-donut-pie-charts-in-html5-2c587e935d72](https://medium.com/@heyoka/scratch-made-svg-donut-pie-charts-in-html5-2c587e935d72). This template does math, so you may not want to follow its example. \n\n\n**In:**\n\n```python\n# Percent of circle to be filled\nfull = 60\n# Percent distance from top to start\noffset = 12.5\n```\n\n**In:**\n\n```python\n%%jinja_template svg_example\n\n```\n\n**In:**\n\n```python\n%jinja --template svg_example --svg\n```\n\n*(There is an SVG image in the actual notebook.)*\n\n\n\n\n\n\n",
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