Which

which(name, flags = os.X_OK, all = False) -> str or str set

Works as the system command which; searches $PATH for name and returns a full path if found.

If all is :const:True the set of all found locations is returned, else the first occurrence or :const:None is returned.

Parameters:

Name	Type	Description	Default
`name`	str	The file to search for.	required
`all`	bool	Whether to return all locations where name was found.	required

Returns:

Type	Description
Set[str] | str | None	If all is :const:True the set of all locations where name was found,
Set[str] | str | None	else the first location or :const:None if not found.

Example

which('sh') '/bin/sh'