Unable to use Parameter value in qmd document when passed through command line

[sunvitD]

Description

---
title: "Test File"
format: html
html:
embed-resources: true
execute:
  echo: False
jupyter: python3
---

# Title

Print this in report
```{python}
foo
```

Command used:

quarto render test.qmd -P foo:5 --output test_out.html

Getting Error:

Starting python3 kernel...Done

Executing 'test.quarto_ipynb'
  Cell 1/1: ''...ERROR:

An error occurred while executing the following cell:
------------------
foo
------------------


---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[1], line 1
----> 1 foo

NameError: name 'foo' is not defined

Doubt:

Is this not the correct way to call or evaluate parameter value in qmd python cell ?

Do I need to use it like in R params$foo.

Would really appreciate if you could show me the correct way to use it. Thanks !!!

[mcanouil]

See the documentation: https://quarto.org/docs/computations/parameters.html

Providing a value to the parameter via CLI flag still require your document to follow the parameter syntax for the engine you are using.

[sunvitD]

I have changed the qmd file slightly as per the documentation but it is still giving me same error:

---
title: "Test File"
format: html
html:
embed-resources: true
execute:
  echo: False
jupyter: python3
---

# Title

Print this in report
```{python}
#| tags: [parameters]

foo
```

Error:

Starting python3 kernel...Done

Executing 'test-8.quarto_ipynb'
  Cell 1/2: ''...ERROR:

An error occurred while executing the following cell:
------------------
foo
------------------


---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[1], line 1
----> 1 foo

NameError: name 'foo' is not defined

I am trying to call the parameter value here but in documentation examples are mostly related to assigning the value. So not sure how its need to be called in qmd file when parameter is used via CLI flag .

Document examples below

If you don't mind then could you provide a quarto example just to get it right this time ?

[mcanouil]

You did not follow the documentation and your YAML frontmatter is wrong, i.e., indentation and the weird top-level html key.

Input	Output
--- title: "Test File" format: html embed-resources: true execute: echo: false jupyter: python3 --- # Title Print this in report ```{python} #| tags: [parameters] foo = "default" ``` ```{python} # Using the parameter print(foo) ```

[sunvitD]

I had no idea about using foo = "default". Thanks alot @mcanouil specially for being there even on weekend. Really appreciate it !!

[mcanouil]

I had no idea about using foo = "default". Thanks alot @mcanouil specially for being there even on weekend. Really appreciate it !!

FYI, That's written in the documentation and in the screenshot you took:

To parameterize a document, designate a cell with the tag parameters and provide appropriate default values:

You are welcome ;)

[sunvitD]

Well the document wasn't really clear enough for me in this case .. it might be for others. If you hadn't shown me the example of foo = "default I wouldn't have figure out. But thanks again.

Cheers !!

[sunvitD]

how can we send a list in parameters flag?

I tried:
quarto render test.qmd -P foo:[5,8,3] --output test_out.html this is printing as default literal and not the values in the qmd rendered file.

quarto render test.qmd -P foo:list(5,8,3) --output test_out.html also returns the same.