panel.io.mime_render module#

Utilities for executing Python code and rendering the resulting output using a similar MIME-type based rendering system as implemented by IPython.

Attempts to limit the actual MIME types that have to be rendered on to a minimum simplifying frontend implementation:

application/bokeh: Model JSON representation

text/plain: HTML escaped string output

text/html: HTML code to insert into the DOM

class panel.io.mime_render.WriteCallbackStream(on_write=None, escape=True)[source]#

Bases: StringIO

Methods

write(s)

Write string to file.

write(s)[source]#

Write string to file.

Returns the number of characters written, which is always equal to the length of the string.

panel.io.mime_render.eval_formatter(obj, print_method)[source]#: Evaluates a formatter method.

panel.io.mime_render.exec_with_return(code: str, global_context: dict[str, Any] | None = None, stdout: IO | None = None, stderr: IO | None = None) → Any[source]#

Executes a code snippet and returns the resulting output of the last line.

Parameters:

code: str: The code to execute
global_context: Dict[str, Any]: The globals to inject into the execution context.
stdout: io.StringIO: The stream to redirect stdout to.
stderr: io.StringIO: The stream to redirect stderr to.

Returns:

The return value of the executed code.

panel.io.mime_render.find_requirements(code: str) → list[str][source]#

Finds the packages required in a string of code.

Parameters:

codestr: the Python code to run.

Returns:

List[str]: A list of package names that are to be installed for the code to be able to run.

Examples

>>> code = "import numpy as np; import scipy.stats"
>>> find_imports(code)
['numpy', 'scipy']

panel.io.mime_render.format_mime(obj)[source]#: Formats object using _repr_x_ methods.